Unit 7 Test Review

Naming Formulas

100

H₂O

Dihydrogen Monoxide

200

N₂S₂

Dinitrogen disulfide

300

KMnO4

Potassium permanganate

400

(NH₄)₂S

Ammonium Sulfide

500

CuBr₂

Copper (II) Bromide

Writing Formulas

100

Sodium Fluoride

NaF

200

Barium Chloride

BaCl₂

300

Diphosphorus Tetraoxide

P₂O₄

400

Carbon Hexaoxide

CO₆

500

Iron (II) Phosphate

Fe₃(PO₄)₂

Molar Mass

100

LiI

134 g/mol

200

PbCO₄

283 g/mol

300

Mg(OH)₂

58 g/mol

400

K₃PO₄

212 g/mol

500

Fe₂(SO₄)₃

400 g/mol

Percent Composition

100

Percent Composition of each element in HCl

3% H    97% Cl

200

Percent Composition of each element in N₂S₂

30.4%  N   69.6% S

300

Percent Composition of each element in KMnO₄ 

K: 25% Mn: 35% O : 40%

400

Percent Composition of Mg(NO₃)₂

Mg: 16% N: 19% O: 65%

500

Percent Composition of each element in (NH₄)₃PO₄

N: 28% H: 8% O: 43% P: 21%

Chemistry Trivia

100

What type of bond forms between a metal and a non-metal?

Ionic Bonds

200

What is the name for a reaction that releases heat?

Exothermic reaction

300

What is the only metal that is liquid at room temperature

Mercury

400

What is the lightest element on the periodic table?

Hydrogen

500

What is the most abundant element in the Earth’s crust?

Oxygen