The three states of matter can be represented by the particle model. But thats just the very beginning. SOLIDS, LIQUIDS AND GASES DEFINITION. by small, solid spheres. In a gas, like helium, particles are widely spaced apart and move quickly and random directions. The molecules of the food coloring themselves are also in motion. Explore. If the temperature increases, the pressure of the gas increases. Give students time after the activity to record their observations by answering the following questions on their activity sheet. An example of a natural polymer is rubber. The three states of matter can be represented by the particle model. There are over 100 elements. The model can be used to explain the physical properties of solids, liquids and gases. Students investigate a drop of water hanging from a dropper and drops of water beading up on wax paper. 1:54. We also use third-party cookies that help us analyze and understand how you use this website. Biomolecules have a wide range of sizes and structures and perform a vast array of functions. Biomolecules have a wide range of sizes and structures and perform a vast array of functions. They therefore hit the surface with more force and a greater number of impacts per second. Answers: Solid keeps its shape can be cut squashed or torn. Tape the wax paper in place. Information about your use of this site is shared with Google. When you squeezed the drop of water out of the dropper, did the water break apart or did it hold together? is an attempt to explain why materials occur in three different forms, or states. Dark matter is an invisible type of matter theorised to make up the majority of all matter in the Universe. Observe the properties of flour, a wooden spoon, nuts, water, and oil. Gases take up more space than solids or liquids and their particles are moving much faster. 3.78K subscribers Subscribe 2.3K views 4 years ago The gang demonstrate the different states - solids, liquids and gases. Cover a large index card with a piece of wax paper so that the wax paper completely covers the card. The theory can be used to explain the different properties of solids, liquids and gases. These biological molecules are composed of carbon, hydrogen, and oxygen molecules. Summary Alcohols are organic compounds. Add water to the cup until it is about filled. Monomers are the smaller units from which larger molecules are made. The adolescent protagonists of the sequence, Enrique and Rosa, are Arturos son and , The payout that goes with the Nobel Prize is worth $1.2 million, and its often split two or three ways. We describe this matter as existing in states (sometimes referred to as phases). A liquid takes the shape of its container. Have students draw a model of water on the molecular level on their activity sheet. Gases - no definite volume or shape. Carbon dioxide is a good example of a substance which can be a liquid, but only when it is under pressure. The particle model represents particles by small, solid spheres. 1 Everything is made up of tiny particles. Gas does not have a fixed shape spreads out to fill the space. When you tilted the wax paper, did the drop split apart or stay together? Biomolecules are all biological materials exclusive of cells and structural proteins when they are used as the natural biomaterials themselves. Our tips from experts and exam survivors will help you through. This is because the particles move faster with more kinetic energy. Necessary cookies are absolutely essential for the website to function properly. biomolecule, also called biological molecule, any of numerous substances that are produced by cells and living organisms. RUMPUS! Our tips from experts and exam survivors will help you through. What are the 4 types of biomolecules and their monomers? These attractions also help explain the mixing of the color in the water. Use look, cover, write check and quizlet to learn the answers to the core questions and the keywords for this topic. German-born Benjamin List and Scotland-born David . Get Revising is one of the trading names of The Student Room Group Ltd. Register Number: 04666380 (England and Wales), VAT No. Macromolecules are large molecules and are constructed from small building block molecules. Internal energy is the total kinetic energy and potential energy of all the particles in a system. Radioactivity - the spontaneous decomposition or disintegration of a nucleus forming a different nucleus and producing one or more additional particles Radioactive decay. You could begin the first class by leading a short discussion. Today. what happens to temperature during a change of state for both heating and cooling. Calculate the density, mass or volume of an object given any two other values. Green Chemistry This site uses cookies from Google to deliver its services and to analyze traffic. View all updates. Today. There are lots of different gases, such as the air we breathe or the helium used to fill balloons. The first to finish is the winner. Use the dropper to gently squeeze out a drop of water but try not to let the drop fall completely out of the dropper. Elements bond in fixed ratios and so can be represented by a chemical formula. They are also further apart, not touching eachother, so are the least dense of the states of matter, as well as the most energectic. Atoms can exist on their own or together as molecules. Task 1a: Use look, cover, write check and quizlet to learn the answers to the core questions and the keywords for this topic, Task 1b: Listen to the podcast to get an overview of this topic, Task 2a: Read through the slides and watch the videos. What are solids liquids and gases made up of? This Foundation GCSE BBC Bitesize video is from the original programmes from 2000 that were broadcast on BBC2. Adding heat energy to particles either raises the temperature and they move faster, or bonds are broken to change from solid to liquid (melting) or liquid to gas (boiling). Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. GCSE Science animations and quizzes. bbc.com. Internal energy is the total kinetic energy and potential energy of all the . the equation for specific latent heat is wrong. For irregular objects, place the object in a measuring cylinder partly filled with water and work out the volume from the rise in the water level, or use a eureka can. This is why liquids can be poured. Hold the cup up with a sheet of white paper behind it so it is easier for students to see the color moving and mixing in the water. Try using your popsicle stick to separate your drop into two. Please correct it. Let students know that for now, you will use circles or spheres to represent molecules and atoms but eventually they will use a more detailed model. Physics Molecules and Matter GCSE AQA Created by: 13ganl Created on: 18-09-17 21:10 P6.1 - Density The density of a subtance is defined as its mass per unit volume. Receive the latest news, resources and support for your subject area from AQA. Contact our team. Liquids - definite volume but able to change shape by flowing. The specific latent heat of fusion is the energy needed to melt 1kg of a solid. the calculations on slide 14 and mark your answers using slide 15, the arrangement of particles in solids liquids and gasses, the different properties of solids liquids and gasses based on their particle arrangement, why gases are less dense than solids and liquids, why a substance that changes state stays the same mass, what happens to temperature during a change of state. A pure substance made from more than one type of element chemically bonded together. New and improved GCSE Science resources and support available. Do not stir. . You can also use BBC b In chemistry, we want to look deeper and find out more about what matter is made of and how it acts. Students will record their observations and answer questions about the activity on the activity sheet. Since the concepts covered in Chapter 1 apply to both atoms and molecules, the term particle is used as a generic term to include both. is a process by which the nuclei of a nuclide emit , or rays. Atoms Elements Compounds and Mixtures test site. Let students know that even though atoms and molecules are different, in Chapter 1 and Chapter 2, they will both be represented by circles or spheres. There are four basic kinds of biological macromolecules: carbohydrates, lipids, proteins, and nucleic acids. What is the difference between liquids and gases? Gases flow and completely fill their container because the particles can move quickly in all directions. Once they have answered the questions, discuss their observations as a whole group. Pinterest. A cluster of non-metal atoms that are chemically bonded together. Explain to students that this is a model of water molecules. They are involved in building organisms from single cells to complex living beings like humans, by interacting with each other. elements and compounds learning resources for adults, children, parents and teachers. In this activity, students look closely at a drop of water and move drops of water on wax paper. Measure a certain volume for an amount of liquid in a measuring cylinder. What are biological molecules and its function? transmutation, converting to another. This quiz can be used as a pre-test for a unit on atoms, molecules, elements, and compounds. Because mass spectrometry measures the mass of charged particles, only ions will be detected, and neutral molecules will not be seen. Collections of pieces, such as the particles of a powder, may have properties that the individual pieces do not have. Most are metals, a few are. They are very compressible (particles are widely spaced). The particles of a liquid are attracted to one another, are in motion, and are able to move past one another. in solids, liquids and gases are arranged differently and move in different ways. It has mass, but it can't be seen and doesn't interact with ordinary matter. Each nucleotide consists of a nitrogen-containing aromatic base attached to a pentose (five-carbon) sugar, which is in turn attached to a phosphate group. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". P6 - Molecules and matter Independent learning Introduction In solids, liquids and gases, the particles are arranged differently. It takes a lot of atoms to make up anything. When a substance is heated, the particles have more kinetic energy. If a gas is allowed to cool, particles slow down and bonds reform to make a liquid (condensing) and if the liquid cools enough it turns to a solid (freezing). After completing his doctoral studies, he decided to start "ScienceOxygen" as a way to share his passion for science with others and to provide an accessible and engaging resource for those interested in learning about the latest scientific discoveries. Task 8c: Complete the seneca learning unit for your set. As fast as you can, use your straw to drag each drop of water to the center. Complete the seneca learning unit for your set. Connect with us. This model explains the properties of substances in their different states, as well as changes of state. Air is a mixture that contains the elements nitrogen, oxygen and argon, and also the compound carbon dioxide. cannot flow, because their particles cannot move from place to place, , because their particles are close together and have no space to move into, can flow and take the shape of their container, because their particles can move around each other, cannot be easily compressed, because their particles are close together and have no space to move into, can flow and completely fill their container, because their particles can move quickly in all directions, can be compressed, because their particles are far apart and have space to move into, Sample exam questions - states of matter and mixtures - Edexcel, Home Economics: Food and Nutrition (CCEA). , depending on the type of substance, eg Age range: 14-16. Atoms fit together with other atoms to make up matter. The food we eat our diet is made up of different biological molecules which give us energy and contain chemicals we need to grow and repair ourselves and help our cells function in our body. Prepare two cards for each group. proteins. pptx, 525.04 KB A digital P6 Molecules and Matter work booklet suitable for AQA GCSE Trilogy Science and Physics. Wittenberg is a nationally ranked liberal arts institution with a particular strength in the sciences. What are solids, liquids and gases? You also have the option to opt-out of these cookies. Biomolecules include large macromolecules (or polyanions) such as proteins, carbohydrates, lipids, and nucleic acids, as well as small molecules such as primary metabolites, secondary metabolites and natural products. All Bitesize KS3 Atoms and molecules Part of Chemistry Atoms, elements and compounds Key points Atoms are the building blocks of everything. contact, random, more energetic. A small gap exists between the two neurones, which an electrical impulse cannot pass across. Units B. My Bitesize All Bitesize GCSE Edexcel States of matter The three states of matter can be represented by the particle model. Changes of state are physical changesas no new substances are produced. The particles are in contact with eachother but move about at random. Eventually, you get ice particles inside a thick, sugar-rich, syrup-like liquid which does not freeze, that also contains small air bubbles and drops of fat. Close together because they attract each other, Moving past each other but not flying apart. In chemistry, there are two main types of particle that we need to know about. The properties of a substance are the properties of a huge number of particles together. Matter is made up of extremely tiny particles called atoms and molecules. In a solid, the atoms and molecules are attached to each other. This work booklet includes the following lessons: L1 Density of Materials L2 Particle Model and Changes of State L3 Internal Energy L4 Temperature Changes in a System About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . The activity sheet will serve as the Evaluate component of each 5-E lesson plan. It describes the arrangement, movement and energy of particles in a substance. DNA is composed of long chains of nucleotides. If you think this will be the case, you can move on to Lesson 1.2Molecules in Motion, which is an application of the concepts covered in this lesson. Task 7c: Complete the exam question and mark your answers. Atom Economy Getting in. For now, students should focus on the motion of the molecules, how they interact, and their distance from one another. Note: Some solids, liquids, and gases are made of atoms, and some are made of molecules. The basic particles that make up an atom are electrons, protons, and neutrons. This can also be explained by the fact that water molecules are very attracted to each other. By using this site, you agree to its use of cookies. Task 8b: Read through the BBC Bitesize revision pages and have a go at the quiz. Show the molecular model animation Particles of a Liquid. A synapse is the junction between two neurones. . small molecules, All these compounds contain the carbon element and they are vital for the life of living organisms. When you were pulling the drop around the wax paper, did the water seem to hold together or come apart easily? (All compared at the same temperature.). BBC Bitesize. ionic compounds, simple molecules, giant molecules and metals. Eventually all the water in the cup will be evenly colored. Sign in, choose your GCSE subjects and see content that's tailored for you. Water molecules are made up of two elements - hydrogen (white atoms) and oxygen (red atoms). Read about our approach to external linking. Atoms are very small and around 100,000,000 of them end to end would measure one centimetre. Solids - relatively rigid, definite volume and shape. He also shares personal stories and insights from his own journey as a scientist and researcher. Proteins are large biopolymer molecules that are made up of repeating monomer units called amino acids. 806 8067 22 Tell students that chemistry is the study of matter and what matter does. Evaporationoccurs from the surface of a liquid at any temperature. . In the radioactive process, the nuclide undergoes a . Physics: Molecules and Matter. Students drawings should show that the molecules are: Be sure students realize that this model shows water molecules enormously bigger than they actually are. Functional group determines their chemical properties. The stop watch was started and the ice was heated steadily (the . This cookie is set by GDPR Cookie Consent plugin. The model is used to explain the physical properties of solids, liquids and gases. Definition: A biomolecule is a chemical compound found in living organisms. GCSE Science Chemistry 9 1 Triple Calculating Percentage. Not loving this? Solids cannot be compressed or squashed because the particles are close together and have no space to move into, Liquids flow and take the shape of their container because the particles can move around each other.Liquids cannot be compressed or squashed because the particles are close together and have no space to move into. Task 8d: Make a mind map or single page revision summary of this topic and add it to your revision folder. ionic compounds, Biomolecules are vital for life as it aids organisms to grow, sustain, and reproduce. A. The nature of substances and chemical reactions, Home Economics: Food and Nutrition (CCEA). Our tips from experts and exam survivors will help you through. If you leave milk or cream out of the fridge overnight or for a few days, its state of matter changes. Registered office: International House, Queens Road, Brighton, BN1 3XE. Biological molecules - GCSE Biology (Single Science) Revision - BBC Bitesize. As fast as you can, tilt the cardboard and guide your race drop around the track to the Finish. Use the density equation to work out the density of the liquid. Matter is anything that takes up space and has weight. There are molecules of compounds (eg CH4) and molecules of elements (eg O2). This provides indirect evidence for evolution. At this point, it is enough to give students simple working definitions of atom and molecule. You can tell students that an atom is the smallest building block of matter and that a molecule is two or more atoms connected together. When all the drops are united in the center, you are done. Biomolecules- Carbohydrates, Proteins, Nucleic acids and Lipids. It describes the arrangement, movement and, of particles in a substance. It also takes up space in the bucket. Despite their great variety, the cells of all living organisms contain only a few groups of carbon-based compounds that interact in similar ways. An overview of the definitions of different types of chemicals, how chemicals can be represented in chemical equations, how chemicals can be separated, and a number of important calculations related to chemical formulae. These cookies track visitors across websites and collect information to provide customized ads. Gloucestershire. 20 Aug 2022. Carbohydrates and fats are made up of carbon, hydrogen and oxygen. Most are metals, a few are metalloids (also known as semi-metals), and the rest are non-metals. What happens at a synapse BBC Bitesize? States of matter Matter is made up of small particles called atoms. 3 The particles in a substance are the same whether its in the solid, liquid or gas state, but their arrangement and movement change. US & Canada. Task 5a: Read through the slides and watch the video, Describe what must be happening to the forces of attraction between particles when a change of state occurs, Explain how internal energy changes during a change of state, despite temperature staying the same, Task 6a: Read through the slides and watch the video, List factors that affect the energy needed for a change of state to occur, Define specific latent heat of vaporisation, Give the equation for calculating specific latent heat, including units. Atoms can exist on their own or together as molecules. BBC GCSE Bitesize Percentage yield. Chapter 3 and Chapter 4 will go into more depth about the structure of atoms and molecules and will use more detailed models to represent them. Are you loving this? The first, titled Arturo Xuncax, is set in an Indian village in Guatemala. The experimenter made sure that the thermometer was in place (in the centre of the ice mass) for long enough to allow the thread of the thermometer to fully contract before noting the reading. BBC GCSE Bitesize Atom economy. What are the 5 elements of nucleic acids? This cookie is set by GDPR Cookie Consent plugin. Explain what happens to temperature during a change of state for both heating and cooling. The atom is the basic building block for all matter in the universe. What are the 3 main groups of biological molecules? In terms of relative energy, gas particles have the most energy, solid particles have the least energy and liquid particles are somewhere in between. The pressure of gas on a surface is caused by gas particles repeatedlt hitting the surface. What is the difference between macromolecules and biomolecules? BBC Bitesize Science // States of Matter - What are States? What happened when the two small drops touched? Atoms and molecules as particles. On earth, solid, liquid, and gas are the most common states of matter. The cookies is used to store the user consent for the cookies in the category "Necessary". An overview of the definitions of different types of chemicals, how chemicals can be represented in chemical equations, how chemicals can be separated, and a number of important calculations related to chemical formulae. They don't stay in the same shape, they flow over eachother. The internl energy of a system is stored in atoms and molecules that make up a system. Students discuss the meaning of chemistry and matter. Atoms C. Cubes D. MITs Alan , In 2020, as a response to the disruption caused by COVID-19, the College Board modified the AP exams so they were shorter, administered online, covered less material, and had a different format than previous tests. 29 November 2022. Measure the mass of an empty beaker. Task 4a: Read through the slides and watch the video, Describe what happens to temperature during a change of state. How is this similar to the water staying together after the balloon is popped? ionic compounds, simple molecules, giant molecules and metals. The model is used to explain the. Liquids. A more general name for this class of material is biological materials. The particles in solids, liquids and gases are arranged differently and move in different ways. Scientists originally thought that it was impossible to split the atom, but this is not the case. If it changes state, the particles have more potential energy. What is the structure of biological molecules? Conduction happens whilst a substance is heated, particles will acquire extra energy, and vibrate more. A material in solid state holds its form and shape. Proteins are the primary building materials of the body. Task 4c: Complete the exam question and mark your answers. Task 9: - Complete the quiz for your set to make sure you understand this topic. The specific latent heat of vaporisation is the energy needed to boil 1kg of a liquid. Learn about . Thats why they move past each other but dont get very far apart from one another. Most people are familiar with three states of matter - solids, liquids and gases - but there are two more that are less commonly known but just as important - plasmas and Bose . Copyright 2023 American Chemical Society. Not only are water molecules much smaller, they are also much more numerous. A single particle does not have the properties of the material it is part of. From his own journey as a scientist and researcher oxygen molecules as fast as you can, use straw... State holds its form and shape an object given any two other values constructed from small building block all! You are done dont get very far apart from one another, nucleic acids it describes arrangement! Together with other atoms to make up a system it was impossible to split the atom but. A liquid for your set to make up matter you can, your... The original programmes from 2000 that were broadcast on BBC2 particles are in contact with eachother but move about random... Try using your popsicle stick to separate your drop into two matter changes cut squashed or.! Decomposition or disintegration of a liquid four basic kinds of biological macromolecules: carbohydrates,,. In their different states - solids, liquids and gases, the of... Ranked liberal arts institution with a piece of wax paper you through used to explain the different properties solids. As it aids organisms to grow, sustain, and also the compound dioxide. Bbc Bitesize revision pages and have a go at the same shape, they flow over eachother composed! Few days, its state of matter can be represented by the fact that water are! Substances and chemical reactions, Home Economics: food and Nutrition ( CCEA ) be cut squashed torn! 2.3K views 4 years ago the gang demonstrate the different properties of substances in their different states solids... Heated, the cells of all the particles have more kinetic energy humans, by with! The elements nitrogen, oxygen and argon, and are constructed from small building block for matter. Science and Physics the answers to the Finish range of sizes and and. One another Road, Brighton, BN1 3XE we need to know.... Water beading up on wax paper, did the water lipids, proteins, nucleic acids this quiz be... Make up an atom are electrons, protons, and their monomers squashed or.... - GCSE Biology ( single Science ) revision - BBC Bitesize revision pages and have a fixed spreads. Biomolecules and their distance from one another, like helium, particles are in motion - relatively rigid, volume... All directions different nucleus and producing one or more additional particles Radioactive decay liquid. My Bitesize all Bitesize GCSE Edexcel states of matter the three states of matter matter is made up two! A liquid compounds Key points atoms are very small and around 100,000,000 of them to... Websites and collect information to provide customized ads from a dropper and drops of water out of the it! Trilogy Science and Physics nature of substances and chemical reactions, Home Economics: food and Nutrition ( )... Past each other break apart or stay together faster with more kinetic energy and energy. Is set in an Indian village in Guatemala a nuclide emit, rays! Exam question and mark your answers water and move in different ways the! Smaller units from which larger molecules are made up of repeating monomer units called amino acids started the! Slides and watch the video, describe what happens to temperature during change! Questions, discuss their observations and answer questions about the activity sheet are moving much faster take up more than! Specific latent heat of vaporisation is the energy needed to melt 1kg of a liquid are attracted one! Short discussion explain the physical properties of solids, liquids and gases 8d: make a mind map or page... Activity sheet center, you agree to its use of cookies and perform vast. Unit on atoms, molecules, all these compounds contain the carbon element and they used. Energy and potential energy of particles together children, parents and teachers site uses cookies from Google deliver! Information about your use of this topic and add it to your revision folder but about!, discuss their observations by answering the following questions on their activity sheet will serve as the we... So that the individual pieces do not have hydrogen ( white atoms and! Can exist on their own or together as molecules it is about filled stored in atoms and molecules elements! We also use third-party cookies that help us analyze and understand how use! Trilogy Science and Physics from AQA of atom and molecule theory can represented! Compounds learning resources for adults, children, parents and teachers the pressure of on! And reproduce past each other interacting with each other called biological molecule, any numerous! Molecular model animation particles of a substance is heated, the atoms molecules. Water to the cup will be detected, and neutrons serve as the component... Huge number of particles in a system the compound carbon dioxide spaced apart and move quickly and directions. Liquids, and are constructed from small building block molecules begin the first class by a!: - Complete the seneca learning unit for your set to make up a system revision summary of topic! Like humans, by interacting with each other, moving past each other are. A pre-test for a unit on atoms, molecules, giant molecules matter... A change of state for both heating and cooling biomolecules- carbohydrates, lipids, proteins and... Great variety, the pressure of gas on a surface is caused by particles. Leave milk or cream out of the gas increases forms, or rays move! Giant molecules and matter Independent learning Introduction in solids, liquids and gases are made up of extremely tiny called! As fast as you can, tilt the cardboard and guide your race drop around the track to the will... To opt-out of these cookies, eg Age range: 14-16 when they are very (. Trilogy Science and Physics hydrogen ( white atoms ) and molecules elements, also. ( sometimes referred to as phases ) compressible ( molecules and matter bbc bitesize are arranged differently and move drops of water but not! Was heated steadily ( the producing one or more additional particles Radioactive decay sizes! Well as changes of state work booklet suitable for AQA GCSE Trilogy Science and.... Of this site, you agree to its use of this topic Chemistry this site, you agree to use.: a biomolecule is a model of water beading up on wax paper, did water! Metals, a few groups of biological macromolecules: carbohydrates, lipids proteins! Organisms to grow, sustain, and compounds Brighton, BN1 3XE or cream out of the color in center. Are in contact with eachother but move about at random leave milk or out! The cardboard and guide your race drop around the wax paper so that the wax paper we. Substances are produced by cells and structural proteins when they are used as a whole.... Matter work booklet suitable for AQA GCSE Trilogy Science and Physics acquire extra energy and! In different ways and vibrate more that it was impossible to split the atom but! Of an object given any two other values water beading up on wax paper, did the drop around track... Or stay together milk or cream out of the dropper, did the water staying together the! Proteins when they are also in motion model can be represented by a chemical compound found in living organisms is... Fusion is the study of matter when you tilted the wax paper so that wax. Wooden spoon, nuts, water, and the rest are non-metals visitors across websites collect. Carbon, molecules and matter bbc bitesize, and nucleic acids and lipids in living organisms contain only a few groups biological. Task 8d: make a mind map or single page revision summary this. Wax paper living beings like humans, by interacting with each other, past... A lot of atoms, and their particles are widely spaced ) revision - BBC revision... Monomers are the 4 types of biomolecules and their distance from one another, in... Working definitions of atom and molecule may have properties that the wax paper that! The Universe elements bond in fixed ratios and so can be represented by the particle represents! Model animation particles of a nuclide emit, or rays as a whole group they flow over eachother up.! Level on their own or together as molecules additional particles Radioactive decay could begin the first, Arturo... Attracted to each other, moving past each other but not flying apart will not be seen,... Additional particles Radioactive decay and so can be a liquid which larger molecules and matter bbc bitesize are very small and 100,000,000. Science and Physics for adults, children, parents and teachers from another. Elements and compounds learning resources for adults, children, parents and teachers to. Give students simple working definitions of atom and molecule, biomolecules are all biological materials exclusive of cells living... To change shape by flowing not be seen to function properly for now, students look closely at a of... Water out of the material it is molecules and matter bbc bitesize filled you were pulling the drop the. First class by leading a short discussion of the gas increases, did the drop fall out! Food coloring themselves are also much more numerous be represented by a chemical found! Why they move past one another atoms fit together with other atoms to up. Simple molecules, how they interact, and gas are the building blocks of everything can not across..., liquids and gases density equation to work out the density of the body and fill. Units from which larger molecules are made of atoms, elements and compounds Radioactive!
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