Counting Atoms

Front

What is the chemical formula for water?

Back

H₂O

Front

How many atoms of Hydrogen are in one molecule of water (H₂O)?

Back

2

Front

How many atoms of Oxygen are in one molecule of water (H₂O)?

Back

1

Front

What is the total number of atoms in one molecule of water (H₂O)?

Back

3 (2 Hydrogen + 1 Oxygen)

Front

What is the chemical formula for Magnesium Chloride?

Back

MgCl₂

Front

How many Magnesium atoms are in 10(MgCl₂)?

Back

10

Front

How many Chlorine atoms are in 10(MgCl₂)?

Back

20 (10 MgCl₂ x 2 Cl per formula unit)

Front

What is the Law of Conservation of Mass?

Back

Matter cannot be created or destroyed in a chemical reaction.

Front

Is the equation 2H₂ + O₂ → 2H₂O balanced?

Back

Yes, it follows the Law of Conservation of Mass.

Front

How many total atoms are in the equation 2H₂ + O₂ → 2H₂O?

Back

6 (4 Hydrogen + 2 Oxygen)