In a chemical reaction the starting substance(s) that react ____.

A chemical equation with the same number of atoms of each element on both sides of the arrow.

______represent the number of units of each substance taking part in a reaction.

What is the arrow in a chemical equation...

H_{2 +} O --> H₂O

____a change in which one or more substances are converted into new substances.

How many Al atoms are in this compound? 4Al₂O₃

How many F atoms are in this compound?

6MgF₂

The substances listed on the right side of a chemical equation are the

 $2H_{2\ }+O_{2\ \ }\rightarrow\ 2H_2O$  What does the small number 2 represent

One _____ is the amount of a substance that contains 6.02 x 10²³ particles of the substance.

The mass in grams of one mole substance _____.

The number of atoms of oxygen in Cu(NO₃)₂ is ...

True or False

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