Chemistry Review

Is the following equation balanced?

4Fe + 3O₂ ---> 2Fe₂O₃

• YES

• NO

Tags

NGSS.HS-PS1-7

2 NH₃+ 1 H₂SO₄ ----> 1 (NH₄)₂SO₄

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

CaCO₃ ----> CaO + CO₂

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

Pb + FeSO₄ ----> PbSO₄ + Fe

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

Na₃PO₄ + 3 KOH ----> 3 NaOH + K₃PO₄

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Is the following equation balanced?

Al + O₂ ---> 2Al₂O₃

• YES

• NO

Tags

NGSS.HS-PS1-7

Which of the following is a reactant in the following equation?

O₂ + C₆H₁₂O₆ > CO₂ + H₂O

• CO₂

• H₂O

• O₂

How do we know a chemical reaction has taken place?

• Substances change in appearance

• Substances change in size

• Substances change in states, like from a liquid into a solid.

• New substances are formed

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a product in the following equation?

O₂ + C₆H₁₂O₆ > CO₂ + H₂O

• CO₂

• C₆H₁₂O₆

• O₂

Tags

NGSS.HS-PS1-2

NGSS.HS-LS1-7

NGSS.HS-LS2-5