ERHS Chem - Chapter 7 Chemical Reactions

What are the chemicals on the left part of a chemical equation called?
2H₂ + O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Tags

NGSS.MS-PS1-5

What are the chemicals on the right part of a chemical equation called?
2H₂ + O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

When this reaction is completely balanced, what coefficient goes in the blank?

C₂H₆ +___ O₂ → CO₂ + H₂O

• No Coefficient (1)

• 4

• 5

• 7

Tags

NGSS.HS-PS1-7

What type of reaction is this?
4Si + S₈ --> 2Si₂S₄

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

What type of reaction is this?
2Pb(NO₃)₂ --> 2PbO + 4NO₂ + O₂

• Synthesis 
• Decomposition
• Single 
  Replacement
• Combustion

Which of the following is an example of a double replacement reaction?

• 2Na + Br₂ --> 2NaBr
• 2KClO₃ --> 2KCl + 3O₂
• HgO + 2NaCl → Na₂O + HgCl₂
• Cl₂ + 2NaBr --> 2NaCl + Br₂

Which of the following is an example of a single replacement reaction?

• Na + Br₂ --> 2NaBr
• 2KClO₃ --> 2KCl + 3O₂
• HgO + 2NaCl → Na₂O + HgCl₂
• Cl₂ + 2NaBr --> 2NaCl + Br₂

Which of the following equations represents the balanced synthesis reaction of iron (III) and oxygen?

• Fe + 3 O₂ → Fe₂O₃
• 3 Fe + 3 O₂ → 2 Fe₂O₃
• 2 Fe + O₂ → Fe₂O₃
• 4 Fe + 3 O₂ → 2 Fe₂O₃

Tags

NGSS.HS-PS1-7

Which of the following is a balanced equation representing the decomposition of lead (II) oxide?

• 2 PbO → 2 Pb + O₂

• 2 Pb₂O → 4 Pb + O₂

• PbO → Pb + O

• Pb₂O → 2Pb + O

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-2

According to the activity series, which of the following single replacement reactions can occur?

• Ca + Al₂(SO₄)₃

• Fe + NaOH

• Ni + MgSO₄

• Al + KOH

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1