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States of Matter
| Term | Definition |
|---|---|
| Solid | A state in which a substance has definite volume and shape |
| Liquid | A state in which a substance has a definite volume but no fixed shape |
| Gas | A state with no definite volume or shape |
| Elements | A substance which cannot be split into a simpler substance |
| Mixtures | A blend of two or more elements / compounds which are not chemically combined |
| Compounds | A combination of two or more elements bonded together in some way |
| Physical changes | A change in physical property (state), which can be undone |
| Chemical changes | A change due to a reaction, makes a new substance and cannot be undone |
| Melting | Changing from solid to liquid |
| Freezing | Changing from liquid to solid |
| Boiling | Changing a liquid to a gas / vapour |
| Evaporating | Changing from liquid to gas |
| Condensing | Change from gas to liquid |
| Sublimation | Change from solid to gas |
| Dissolving | Mixing a solid into a liquid with particles too small to see |
| Vapour | Similar to gas, no definite volume or shape |
| Particles | What matter is made of |
| Pure | Substance made of only one element or compound |
| Diffusion | The process of things mixing without any help |
| Expansion | Particles speed up, moving faster, getting further apart and taking up more space |
| Contraction | Particles slow down, moving slower, getting closer together and taking up less space |
| Mass | How much matter is in an object |
| Density | How much matter there is for the volume of an object |
| Volume | Amount of space an object takes up |
| Solute | Solid, dissolves in solvent |
| Solvent | Liquid, dissolves the solvent |
| Soluble | Able to dissolve |
| Suspension | A solution which separates over time |
| Concentration | How much solute is in the solution |
| Reactant | Substance present at the start of a chemical reaction |
| Product | Substance formed in a chemical reaction |
| Sieving | Pouring a mixture through a sieve to remove large solids |
| Decanting | Pouring off water in a mixture |
| Distilling | Evaporating liquid out of a mixture and collecting it in another container |
| Filtering | Pouring a mixture through a paper filter to remove solids |
| Magnetism | Using magnets to remove metals from a mixture |
| Crystallisation | Forming crystals by evaporating the liquid away |
| Chromatography | Separating ink colours on paper using water |
| Particle theory | Particles are too small to see. There are spaces between them. Particles are always moving. High temperatures make particles move faster. There are attractive forces keeping the particles together. |
Created by:
MissEichler
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