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KS3 Chemistry vocab
Common Entrance (KS3) Chemistry vocabulary
| Term | Definition |
|---|---|
| NEUTRAL | A liquid with a pH value equal to pH7. |
| ACID | A liquid with a pH value less than pH7. |
| ALKALI | A liquid with a pH value greater than pH7. |
| ALUMINIUM | A very light metal used to make kitchen foil and saucepans. |
| ATOM | The smallest possible part of a element. |
| BUNSEN BURNER | A piece of apparatus that burns gas and is used to heat apparatus. |
| CHROMATOGRAPHY | A way of separating a mixture of coloured dyes or pigments such as found in ink. |
| COMPOUND | The substance formed when two or more elements are chemically combined together. eg HYDROGEN (element) + OXYGEN (element) = WATER |
| CONDENSE (condensation) | This is what happens when a gas turns to a liquid due to being cooled down. For example when steam touches a cold mirror. |
| COPPER | A pink metallic element. It is a very good conductor of heat and electricity. It is the metal that wires are usually made from. |
| DECOMPOSE (decomposition) | The chemical change that takes place when a compound is split apart into two (or more) simpler substances, usually by heating. |
| DISTILLATION | The name of the process used for obtaining the SOLVENT from a SOLUTION. Eg obtaining pure water from sea water. |
| ELEMENT | Chemical substances that contain only one kind of atom. They are listed in the Periodic Table. |
| EVAPORATION | The process for obtaining the solute from a solution by warming the solution and letting the solvent evaporate away. |
| FILTRATION | The process used for separating a SOLID from a LIQUID. Eg removing dirt from water |
| GRAPHITE | A form of carbon. The black substance inside pencils (the pencil lead). |
| IMMISCIBLE | Two liquids that will not mix together (like oil and water) |
| INSOLUBLE | When a substance cannot dissolve. |
| MALLEABLE | A substance that can be hammered into thin sheets. Includes most metals. Good examples are gold, copper or lead. |
| MIXTURE | Something that contains at least two substances that can be separated without a chemical reaction taking place. |
| MOLECULE . | The particle formed when two or more atoms chemically join together. |
| pH SCALE | A scale of numbers (from 1 to 14)which shows how acidic or alkaline a liquid is. |
| REDUCE (reduction) | The kind of reaction happens when we remove the oxygen from a compound. |
| RESIDUE | The solid remaining in the filter paper after filtering. |
| SOLID | A solid is one of the three states of matter (the other two being liquids and gases). |
| SOLUBLE | This is how we describe a substance that can be dissolved. Sugar is soluble in water. |
| SOLUTE | The solid that has been dissolved when we make a solution. |
| SOLUTION | This is the liquid obtained by dissolving one substance in another. |
| STATES OF MATTER | SOLID, LIQUID and GAS are known as this. |
| FILTRATE | The liquid left behind after filtering. |
| REDUCING AGENT | An element good at removing oxygen from a compound. (Eg magnesium) |
| SOLVENT | A liquid good at dissolving things |
| OXIDISE | A kind of reaction when oxygen comines with another element. |
Created by:
MikeCurtis
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