Chemical equations 0.0 / 5 ? ChemistryChemical patterns and reactivity seriesGCSEAQA Created by: rhys321Created on: 21-10-19 10:31 what is a chemical equation? it shows the reactants (the substances you start with) and the products (the new substances you have made) in a reaction 1 of 7 what is a reactant? the substances you start with 2 of 7 what is a product? the new substance made 3 of 7 what happens to the atoms in a chemical reaction? they get rearranged, we can compare the mass of reactants compared with the mass of products 4 of 7 what is a symbol equation? (e.g. CaCO3 ---> CaO + CO2) this is an example of a symbol equation to show how much of each substance is involved in each reaction 5 of 7 why must a equation be balanced? atoms cannot be created or destroyed in a reaction therefore there must be a equal amount of each atom on both sides of the equation 6 of 7 what is the law of conservation of mass? the total mass of the product formed in a reaction is equal to the total mass of the reactants 7 of 7
Comments
No comments have yet been made