Reactions & Balancing

What reaction type is characterized by the reactant breaking down as the reaction progresses?

• Synthesis
• Decomposition
• Combustion
• Double Replacement

What is the term for the → sign in a reaction?

• makes
• produces
• yields
• all are correct

What two molecules are produced in a combustion reaction?

• CO₂ + NH₄
• SiO₂ + H₂O
• H₂O + CO₂
• CO₂ + H₂O₂

Tags

NGSS.MS-PS1-5

Which set of coefficients properly balances the reaction below?
_Cu + _H₂O →_ CuO₃ + _H₂

• 1,3,1,5
• 2,6,2,6
• 1,3,1,3
• 1,2,3,4

Tags

NGSS.HS-PS1-7

What is the coefficient of AgNO₃ in this reaction?
_AgNO₃ + _H₂S →_Ag₂S+_HNO₃

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-7

Which of the following can be categorized as a synthesis reaction?

• Ba + NaCl →BaCl₂ + Na
• KNO₃→K⁺ + NO₃^-
• 2Li + F₂ → 2LiF
• HCl + LiNO₃ → HNO₃ + LiCl

Tags

NGSS.MS-PS1-5

What type of reaction is displayed below?
HCl + NaOH → NaCl + H₂O

• Neutralization
• Combustion
• Double Replacement
• Decomposition

Is the reaction below exothermic or endothermic?
CH₄ + 2O₂ → CO₂ + H₂O + heat

• exothermic
• endothermic

Tags

NGSS.HS-PS1-4

What are the correct coefficients for the reaction below?
_C₄H₁₀ + _O₂ → _CO₂ + _H₂O

• 4, 26, 16, 20
• 2, 13, 8, 10
• 1, 6.5, 4, 5
• 2, 8, 13, 10

Tags

NGSS.HS-PS1-7

What type of reaction is displayed below?
2Al + Fe₂O₃ → 2Fe + Al₂O₃

• Single Replacement
• Double Replacement
• Synthesis
• Combustion

Tags

NGSS.HS-PS1-1