When sodium reacts with chlorine, sodium chloride is produced. Andrew represented this reaction with this equation:

Na + Cl2 → 2NaCl

The equation is (BLANK 1) because the number of (BLANK 2) atoms is (BLANK 3) on both sides of the arrow.

BLANK 1
A) Balanced
B) Not Balanced

BLANK 2
A) Chlorine
B) Sodium

BLANK 3
A) Equal
B) Not Equal