Front

C-14 is a(n) ______ of Carbon.

Back

isotope

Front

What does the 3 represent in this chemical equation?

Back

3 molecules of sucrose

Front

If you change the number of neutrons in an atom you get ______.

Back

a new isotope.

Front

Horizontal rows on the periodic table are called ______.

Back

Periods

Front

A mixture that has a uniform composition throughout is a ______.

Back

homogeneous mixture

Front

What is the basic unit of life?

Back

Cell

Front

What is the pH range of acids?

Back

0 to 6.9

Front

What is the primary function of enzymes in biochemical reactions?

Back

To speed up the reactions.

Front

What is the term for a substance that cannot be broken down into simpler substances?

Back

Element

Front

What is the chemical formula for water?

Back

H2O