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