Counting Atoms Practice #2

Front

What is the chemical formula for table salt?

Back

NaCl

Front

How many elements are in the compound NaCl?

Back

2

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of that element in a molecule.

Front

How many nitrogen atoms are in 5 N₂O?

Back

10

Front

What is the total number of atoms in C₆H₁₂O₆?

Back

24

Front

How many different elements are in C₈H₁₀N₄O₂?

Back

4

Front

What does the coefficient in a chemical formula represent?

Back

The number of molecules of that compound.

Front

How many molecules are represented by 3 NaHCO₃?

Back

3

Front

What is the total number of atoms in 3 NaHCO₃?

Back

15 (3 Na + 3 H + 3 C + 9 O)

Front

What is the significance of the chemical formula in a compound?

Back

It shows the types and numbers of atoms in the compound.