Counting Atoms Practice

Front

What is the chemical formula for table salt?

Back

NaCl

Front

How many atoms of sodium (Na) are in one formula unit of NaCl?

Back

1

Front

How many atoms of chlorine (Cl) are in one formula unit of NaCl?

Back

1

Front

What is the total number of elements in NaCl?

Back

2

Front

What is the chemical formula for calcium carbonate?

Back

CaCO₃

Front

How many different elements are in CaCO₃?

Back

3

Front

What is the chemical formula for laughing gas?

Back

N₂O

Front

How many nitrogen atoms are in 5 N₂O?

Back

10

Front

How many total atoms are in 3 N₂?

Back

6

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of that element in the molecule.