Mastering Chemical Equation Balancing

Magnesium can be burned in oxygen to produce solid magnesium oxide.

Which of the following is the above reaction written out as a balanced equation.

• 2Mg + O₂→ 2MgO

• Mg + O → MgO

• 2Mg + CO₂ → 2MgO + C

• 2Mg + O₂ → Mg₂O₂

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

To balance an equation you should:

• ONLY change subscripts.

• ONLY change coefficients.

• Change BOTH subscripts and coefficients.

Tags

NGSS.MS-PS1-5

Which of the following is a synthesis reaction?

Tags

NGSS.MS-PS1-2

• 3

• 4

• 5

• 6

• Synthesis

• Decomposition

• Single replacement

• Double replacement

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Which of the following is a decomposition reaction?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Which of the following is a single replacement reaction?

• 4

• 5

• 6

• 8