End of year science assessment

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reactant
substances present at the start of the reaction
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reactant particles
A general term for a small piece of matter. For example, protons, neutrons, electrons, atoms, ions or molecules
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successful collision
A collision between reactant particles that has enough energy for a reaction to happen
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activation energy
The minimum amount of energy that colliding particles must have for them to react.
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energy
energy released in a chemical reaction or absorbed in the creation of a chemical compound
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relative formula mass
The sum of the relative atomic masses of the atoms in a chemical formula.
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volume
The volume of a three-dimensional shape is a measure of the amount of space or capacity
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Card 2

Front

A general term for a small piece of matter. For example, protons, neutrons, electrons, atoms, ions or molecules

Back

reactant particles

Card 3

Front

A collision between reactant particles that has enough energy for a reaction to happen

Back

Preview of the back of card 3

Card 4

Front

The minimum amount of energy that colliding particles must have for them to react.

Back

Preview of the back of card 4

Card 5

Front

energy released in a chemical reaction or absorbed in the creation of a chemical compound

Back

Preview of the back of card 5
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