Chemical Reactions Test Review

NaOH + HCl --> NaCl + H₂O Identify the reactants in the chemical equation above.

• NaOH and HCl
• NaCl and H₂O
• HCl and H₂O
• HCl and NaCl

Tags

NGSS.MS-PS1-1

The Law of Conservation of Mass states

• that matter exists in all states and reacts the same

• that matter can only be changed into new substances by introducing a catalyst

• that matter exists in the same state throughout any chemical change

• that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

Tags

NGSS.HS-PS1-7

2AgNO₃ + CaCl₂ --> 2AgCl + Ca(NO₃)₂

Identify the products in the chemical equation above.

• 2AgNO₃ and CaCl₂
• 2AgCl and Ca(NO₃)₂
• CaCl₂ and Ca
• Ag, Cl, N, and Ca

The following is what type of reaction:
PbCl₂ + AgNO₃ → Pb(NO₃)₂ + AgCl

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

The following is what type of reaction:
NH₃ + HCl  → NH₄Cl

• Synthesis
• Decomposition
• Single Replacement Replacement
• Double Replacement Replacement

What type of chemical reaction is this?
Al(OH)₃ → Al₂O₃  + H₂O

• Decomposition
• Combustion
• Synthesis
• Single Replacement 

C₄H₁₂ + O₂ → CO₂ + H₂O

• Synthesis
• Combustion
• Single Replacement
• Double Replacement

Always starts with a Hydrocarbon that reacts with oxygen and produces carbon dioxide and water. 

• Decomposition
• Synthesis
• Combustion
• Single Replacement

Which side of a chemical equation is the reactant side?

• Left (before the yields sign)
• Right (after the yields sign)

Which side of a chemical equation os the product side?

• Left (before the yields sign)
• Right (after the yields sign)