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CPO Chapter 20 terms

Chemical Equations

QuestionAnswer
Balance occurs when the number and type of atoms on the reactant's and product's sides of a chemical equation are equal.
Chemical change a change in a substance that involves the breaking and reforming of chemical bonds to make a new substance or substances.
Chemical equation chemical formulas and symbols that represent a chemical reaction.
Coefficient a number placed in front of a chemical formula to make the number of atoms on each side of a chemical equation equal
Conservation of atoms principle that states the number of each type of atom on the reactant's side must be equal to the number of each type of atom on the product's side of a chemical equation.
Excess reactant a reactant that is not completely used up.
Hydrochloric acid a highly acidic substance your stomach normally produces to help you break down food.
Limiting reactant the reactant that is used up first in a chemical reaction.
Percent yield the actual yield of product in a chemical reaction divided by the predicted yield
Physical change change in the physical properties of a substance.
Products substances that are produced in a chemical reaction from reactants.
Reactants a substance that enters into and is altered in the course of a chemical reaction.
Polymer molecules that consist of long chains of repeating combinations of atoms.
Chemical reaction the breaking of bonds to form new substances (called the products); atoms are rearranged.
Created by: tjmelia
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