UNIT 2 Assessment ONLY ONE ATTEMPT

Front

The compounds that go into a reaction are called __________.

Back

reactants

Front

The compounds that come out of a reaction are called __________.

Back

products

Front

What does it mean for an equation to be balanced?

Back

There are the same number of atoms on the reactant side and the product side of the equation.

Front

When atoms rearrange to form new substances, a __________________________ has taken place.

Back

Chemical Reaction

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

Which of the following is NOT a sign of a chemical reaction?

Back

Change in phase solid to liquid.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What are coefficients in a chemical equation?

Back

Numbers placed before the compounds to indicate the number of molecules involved in the reaction.

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture during a chemical reaction.

Front

What is a color change in a chemical reaction?

Back

A change in color that indicates a chemical reaction has occurred.