End of year science assessment 0.0 / 5 ? ChemistryRate of reactionGCSEAQA Created by: emily.edwardsCreated on: 14-06-18 16:49 reactant substances present at the start of the reaction 1 of 7 reactant particles A general term for a small piece of matter. For example, protons, neutrons, electrons, atoms, ions or molecules 2 of 7 successful collision A collision between reactant particles that has enough energy for a reaction to happen 3 of 7 activation energy The minimum amount of energy that colliding particles must have for them to react. 4 of 7 energy energy released in a chemical reaction or absorbed in the creation of a chemical compound 5 of 7 relative formula mass The sum of the relative atomic masses of the atoms in a chemical formula. 6 of 7 volume The volume of a three-dimensional shape is a measure of the amount of space or capacity 7 of 7
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