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10 Questions

Possible Test Questions

What is the pH scaled used to measure? To measure acidity and alkalinity.
What are coefficients? They are the #’s that come before the chemical formula and indicate the # of particles that participate in the reaction.
What do chemical formulas tell you? The elements and the number of elements
What does physical change not change? The composition of a substance
What does chemical change result in? The formation of one or more new substances
What does the subscript give you? The number of atoms for a particular elements
What are reactants? Substances broken aparts or combined in a chemical reaction
What are products? New substances formed in a chemical reaction
What is a chemical equation? A chemical reaction that has already occured
What are exothermic reactions? Chemical reactions that release heat energy.
Created by: 10014518