Semester 2 Final Exam Review

What is the formula for magnesium chloride?

• MgCl
• Mg₂Cl
• MgCl₂
• Mg(ClO₃)₂

The chemical formula for an ionic compound of potassium and oxygen is

• KO.
• K₂O.
• K₂O₂.
• KO₂.

The chemical formula of magnesium hydroxide is

• MgOH₂
• Mg(OH)₂
• Mg(OH)
• MgH₂

Aluminum fluoride is...

• AlF₃

• Al₃F

• FAl₃

• F₃Al

The chemical compound for sodium phosphate would be:

• Na(PO₄)

• Na₂(PO₄)

• Na₃(PO₄)

• Na(PO₄)₃

If an element is diatomic it should have a subscript of___

• 1, always

• 2, only when it is a single element

• it shouldn't have a subscript, it should have a coefficent

• 2, when bonded in a compound

What type of reaction is this?

2 C₆H₁₄ + 19 O₂ → 12 CO₂ + 14 H₂O

• Single Replacement

• Double Replacement

• Combustion

• Decomposition

Predict the product of this synthesis reaction:

Al + S →

• AlS

• AlS₈

• Al₂S

• Al₂S₃

Predict the products for the decomposition of aluminum oxide, Al₂O₃ →

• Al + O₂

• O + Al₂

• Al₂ + O₃

• Al + O

When you dye Easter eggs, you mix food coloring and vinegar into boiling water to create the dye. What is/are the solute(s)?

You may choose more than one answer.

• food coloring

• vinegar

• water

• dye