Counting Atoms Practice

Front

What is the chemical formula for laughing gas?

Back

N₂O

Front

How many nitrogen atoms are in 5 N₂O molecules?

Back

10 nitrogen atoms

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in one molecule.

Front

How many molecules are represented by 3 NaHCO₃?

Back

3 molecules

Front

What is the total number of atoms in one molecule of O₂?

Back

2 atoms

Front

How many atoms are in one molecule of HCl?

Back

2 atoms (1 H and 1 Cl)

Front

What is the definition of a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

How many different elements are present in the compound N₂O?

Back

2 elements (Nitrogen and Oxygen)

Front

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

Back

Coefficients indicate the number of molecules or moles of a substance.

Front

How many total atoms are in the molecule NaHCO₃?

Back

6 atoms (1 Na, 1 C, 3 O, 1 H)