Share Intro to Chemistry 5.1 Quiz Review
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A ___ is a number placed in front of an element symbol or a chemical formula in an equation.
Coefficient
Is this equation balanced?
No
Is this equation balanced?
Yes
Is this equation balanced?
No
Chemical equations are balanced by adding ___.
Coefficients
To show that mass is conserved, a chemical equation must show that the number of each type of atom must be ___, or the same on both sides of the equation.
Balanced
Mass is conserved in a chemical reaction because ___ are conserved.
Atoms
The ___ states that the total mass of the reactants before a chemical reaction is the same as the total mass of the products after the chemical reaction.
Law of conservation of mass
Two or more reactants are separated by ___ signs, as are any two or more products.
Plus
True or False: In a chemical equation, the reactants are written to the left of an arrow, and the products are written to the right of the arrow.
True
___ are the substances produced by a chemical reaction.
Products
___ are the starting substances in a chemical reaction.
Reactants
A chemical equation includes the substances that ___ and the substances ___.
React, formed
When chemical formulas differ, they represent different ___.
Substances
A chemical formula contains ___ and ___ to describe the makeup of a compound.
Element symbols and subscripts
Chemical formulas represent ___.
Compounds
