Weegy: When a chemical reaction takes place, the number of atoms of each element in the reactants must be equal to the number of atoms of each element in the products.
User: when a solid compound is formed from chemicals which are in solution it is called a
Weegy: When a solid compound is formed from chemicals that are in solution, it is called a precipitate.
User: When the products of a reaction have more energy than the reactants
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