Chemical Reactions

Front

True or False
In a chemical reaction, no new atoms are created, and no atoms are destroyed. 

Back

true

Front

How is a chemical change different from a physical change?

Back

A new substance is formed, and in a physical change, no new substance is formed.

Front

The left side of the equation below is called

Back

Reactants

Front

The right side of the equation below is called the

Back

products

Front

Which statement is not a description of a chemical reaction?

Back

A liquid is heated in the sun and half of it evaporates.

Front

A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.

Back

Coefficient

Front

A chemical reaction that absorbs heat

Back

Endothermic

Front

What happens to the atoms of the reactants in a chemical reaction?

Back

The atoms of the reactants unbond, rearrange, and then rebond to form the products.

Front

Balance the equation: __K + __Br₂ --> __KBr

Back

2, 1, 2

Front

If the reactants on the left side of a chemical equation are C₃H₈ + 5O₂, what are the products in a balanced equation?

Back

3CO₂ + 4H₂O