CHM 101 Exam Practice Problems

What are the products of the following unbalanced reaction?
NaF + Cl₂ ->

• NaCl + F₂
• NaF₂ + Cl₂
• Na + F₂ + Cl₂
• no reaction

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Will the following reaction take place? 
AuNO₃ + Li ->

• yes 
• no

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What will be the products when CuF₂ reacts with Li?  Do not worry about balancing this.

• LiF₂ + Cu
• Li + Cu + F₂
• F₂ + LiCu
• LiF + Cu

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the generic formula for a single replacement reaction? 

• A + BC ---> CA + B
• A + BC ---> BC + A
• A + BC ---> AB + C
• A + BC ---> AC + B

What are the products of this single replacement reaction: Mg + CuSO₄

• Cu + MgSO₄
• Cu + SO₄Mg
• Cu + Mg(SO₄)₂
• No Reaction

Tags

NGSS.HS-PS1-1

What are the products of this reaction: Fe + Na₂CO₃ ?

• Na₂ + Fe(CO₃)₂
• Na + CO₃Fe
• Na + Fe₂CO₃
• No Reaction

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Define a single replacement reaction.

• A compound reacts with another compound to produce two new compounds.
• A hydrocarbon reacts with water to produce carbon dioxide and water. 
• An element reacts with a compound and produces a new compound if the single element is higher in reactivity.
• An element reacts with another element to produce a compound. 

What will be the products when CuF₂ reacts with Li?  Do not worry about balancing this.

• LiF₂ + Cu
• Li + Cu + F₂
• F₂ + LiCu
• LiF + Cu

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What do we look at to determine if an element is strong enough to replace another element in a single replacement reaction?

• Solubility Rules

• Ionic Charges

• It must be insoluble!

• Activity Series

What are the products of this single replacement reaction: Mg + CuSO₄

• Cu + MgSO₄

• Cu + Mg₂SO₄

• Cu + Mg(SO₄)₂

• No Reaction

Tags

NGSS.HS-PS1-1