Quarter 3 Portfolio Review

Which is the formula for aluminum oxide? (a)  

• Al₂O₃

• AlO

• Al₂O₂

• Al₃O₂

Which is the formula for Chromium (II) bromide

• Cr₂Br

• CrBr₂

• CrBr₃

• Cr₃Br

What is the name of the following compound?

Na₂SO₄

(a)  

• Sodium Sulfate
• Sodium (IV) Sulfate
• Sodium (II) disulfate
• Sodium Sulfur Oxide

What is the NAME of....
Mg₃N₂
(a)  

• magnesium nitride
• magnesium (III) nitride
• magnesium (II) nitride
• magnesium (II) nitrogen

This picture represents which of the following?

(a)  

• compound
• element
• mixture

Use the key to match the models to the correct formulas.

• CH₄

• 
• H₂O

• 
• O₂

• 
• H₂

• 

How many different elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 4

The small number that is written below the symbol and shows how many atoms of each element is present.   (a)  

• Compound
• Molecule
• Coefficient
• Subscript

The large number written in front of a chemical formula.  It shows the number of molecules. (a)  

• Molecule
• Compound
• Coeffiecient
• Subscript

How many atoms of carbon (C) are in C₆H₁₂O₆?

• 3
• 6
• 12
• 24