Unit 5 Review

Front

What is the balanced equation for Ca + H2O?

Back

Ca + 2H2O -> CaO + 2H

Front

What indicates that a reaction is exothermic?

Back

The production of heat.

Front

According to the law of conservation of mass, how do the amounts of each element compare on both sides of a chemical equation?

Back

The amount of atoms on each side is equal.

Front

In a chemical reaction, what are the substances called that undergo change?

Back

Reactants.

Front

What is the correct way to balance the equation Fe + O2 -> Fe2O3?

Back

4Fe + 3O2 -> 2Fe2O3.

Front

What is a chemical reaction?

Back

A process where reactants are transformed into products.

Front

What is an exothermic reaction?

Back

A reaction that releases heat.

Front

What are products in a chemical reaction?

Back

Substances formed as a result of a chemical reaction.

Front

What does it mean to balance a chemical equation?

Back

To ensure the number of atoms for each element is the same on both sides.

Front

What is the role of coefficients in a chemical equation?

Back

They indicate the number of molecules involved in the reaction.