Chemistry Unit Review

Ionic Compounds

100

Which charge do cations and anions have, respectively?

Positive and negative

200

True or false, substances with two polyatomic ions count as an ionic compound

True

300

What is the chemical formula for aluminum sulfide?

Al₂S₃

400

What would the cation and ion look like in MgCr₂O₇?

Mg²⁺   Cr₂O₇^2-

500

What is the name of this compound?

Cr(IO₃)₃

chromium (III) iodate

Molecular compounds

100

What two types of atoms need to be present in order to make up a molecular compound?

Two non-metals

200

What is the prefix associated with 9?

Nona

300

True or False, you use the criss cross rule for molecular compounds

False

400

What is the name of this compound?

SF₆

Sulfur hexafluoride

500

What would be the name for N₃O₆?

dinitrogen hexoxide (or hexaoxide)

Balancing equations

100

How do coefficients act within a balanced chemical equation?

As a multiplication factor

200

How many of each atom are present within this snippet of a balanced reaction? 

4 H₃PO₄

12 hydrogens

4 phosphorus

16 oxygen

300

Balance the following equation:

Al₂O₃ --> Al + O₂

2 Al₂O₃ --> 4 Al + 3 O₂

400

Balance the following chemical equation:

AgNO₃ + K₃PO₄ --> Ag₃PO₄ + KNO₃

3 AgNO₃ + K₃PO₄ --> Ag₃PO₄ + 3 KNO₃

500

Balance the following equation:

CO₂ + H₂O → C₆H₁₂O₆ + O₂

6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂

Mole'in Around

100

What is Avogadro's number?

6.02 x 10²³ molecules (per mole)

200

What is the molar mass of a Yttrium atom?

88.91 g/mol

300

How many moles are in 182.7 g of sulfur? (S₈)

0.7121 moles

400

How many moles are in 512 g of Al₂O₃?

5.02 moles

500

What mass is in 40.0 moles of sodium carbonate?

4,240 g