Review for Balancing Test

What is the formula for magnesium phosphide?

• Mg₃P₂
• Mg₂P₃
• Mg₂(PO₄)₃
• Mg₃(PO₄)₂

The chemical formula of potassium iodide is

• KI
• PI
• KI₂
• K₂I

Tags

NGSS.MS-PS1-1

For the following group of ions, choose the 2 answers that contains ions with the wrong charge.

• Li⁺ K⁺ Ag⁺ H⁺

• Ca²⁺ Zn²⁺ Fe²⁺ Al²⁺

• Cl^- Br^- I^- N^-

• O^2- S^2- SO₄^2- CO^2-

What is the formula for iron(III) oxide?

• FeO₂

• FeO

• Fe₂O

• Fe₂O₃

What is the formula for aluminium hydroxide?

• AlOH

• AlOH₃

• Al(OH)₃

• (Al)₃OH

What type of reaction occurs between an element and a compound?
Zn + 2HCl --> ZnCl₂ + H₂

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

What kind of reaction is this:
4Fe  +  3O₂ →   2Fe₂O₃ 

• Synthesis
• Decomposition
• Single Replacement 
• Double Replacement

What kind of reaction is this:
2H₂O₂ →2 H₂O + O₂

• Synthesis
• Decomposition
• Single Replacement 
• Combustion

Tags

NGSS.MS-PS1-2

What kind of reaction is this:
2C₃H₇OH +9O₂ -> 6CO₂ + 8H₂O

• Double Replacement
• Combustion
• Single Replacement
• Decomposition

The reaction below is an example of?
AgNO₃ + NaCl → AgCl + NaNO₃

• Single Replacement
• Double Replacement
• Decomposition
• Combustion