Counting Atoms

Front

What is the chemical formula for water?

Back

H₂O

Front

How many atoms of Hydrogen are in H₂O?

Back

2

Front

What is the number of different elements in H₂COCH₂?

Back

3

Front

What is a coefficient in a chemical equation?

Back

A number written in front of a chemical formula to indicate how many molecules are present.

Front

How many Oxygen atoms are in Al(OH)₃?

Back

3

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

What is the chemical formula for sulfuric acid?

Back

H₂SO₄

Front

How many atoms of Sulfur are in H₂SO₄?

Back

1

Front

What is the total number of atoms in H₂O?

Back

3 (2 Hydrogen + 1 Oxygen)

Front

What is the difference between a coefficient and a subscript?

Back

A coefficient indicates the number of molecules, while a subscript indicates the number of atoms of an element in a molecule.