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8th Science U3L4

reactants a substance that participates in a chemical reaction
products a substance that forms in a chemical reaction
endothermic reaction a chemical reaction that requires energy input, usually as heat
exothermic reaction a chemical reaction in which energy is released to the surroundings, usually as heat
chemical reaction the process in which atoms are rearranged and chemical bonds are brfoken and formed to produce a chemical change of a substance
law of conservation of mass the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes
law of conservation of energy the law that staes that energy cannot be created or destroyed but can be changed from one form to another
chemical equation a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
chemical formula a combination of chemical symbols and numbers to represent a substance
Created by: ashaver