Free Printable CHEM20 Final Exam Review

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CHEM20 Final Exam Review

Total questions: 20

Worksheet time: 39mins

Name

Class

Date

Which one of these compounds is polar?

$NH_{3_{ }}$

$BH_{3_{ }}$

$CCl_4$

$CH_4$

Which one of these has the lowest boiling point?

$NH_{3_{ }}$

$BH_{3_{ }}$

$CCl_4$

$CH_4$

What is the correct name for Zn₃P₂?

Zinc Phosphide

Zinc (II) Phosphide

Trizinc Diphosphide

Zinc Phosphate

What is the correct name for SeF₄?

Tetraselenium fluoride

Selenium Fluoride

Selenium tetraflouride

Selenium (IV) Fluoride

What is the correct chemical formula for sulfurous acid?

H₂S

HSO₄

H₂SO₄

H₂SO₃

Which of the following models best demonstrates a balanced chemical equation?

Balance the following chemical equation:

____KClO₃ → ____KCl + ____O₂

2KClO₃ → 4KCl + O₂

4KClO₃ → 2KCl + 3O₂

2KClO₃ → 2KCl + 3O₂

Identify the following chemical reaction.

2NaBr + Ca(OH)₂ ----> CaBr₂ + 2NaOH

Synthesis (or combination)

Decomposition

Single displacement

Double displacement

When solid zinc metal is added to a solution of sodium chloride, what will be the products?

solid sodium and zinc chloride solution

chlorine gas and zinc-sodium

no products

sodium zinc chloride solution

10.

What are the products for this reaction?
C₂H₄(g) + O₂(g) -->

C₂O₂(g) + H₄(g)

CO₂(g) + HO(g)

C₂H₄O₂(g)

CO₂(g) + H₂O(g)

11.

Predict the products for the this reaction:
AgNO₃(aq) + KCl(aq) -->

AgCl(aq) + KNO₃(aq)

AgK(aq) + ClNO₃(aq)

AgCl(s) + KNO₃(aq)

KAg(s) + NO₃Cl(aq)

12.

2 NaClO₃ (s) --> 2NaCl (s) +3 O₂ (g)
How many grams of O₂ will be produced from 12.0 moles of NaClO₃ ?

18 g of O₂

576 g of O₂

256 g O₂

384 g of O₂

13.

When 12 moles of O₂ reacts with 1.1 mole of C₁₀H₈what is the limiting reactant? C₁₀H₈ + 12 O₂ --> 10 CO₂ + 4 H₂O

O₂

C₁₀H₈

H₂O

CO₂

14.

How many liters of NH₃ are needed at STP to react completely with 1.34 moles of NO?
4NH₃(g)+6NO(g) --> 5N₂(g) + 6H₂O(l)

5.0 L

20.0 L

7.5 L

120.0 L

15.

What ions are there more of in acidic solutions?

H⁺ or H3O⁺

OH^-

Neither, both ions are there in equal amounts

There is only H⁺ ions

16.

If we dissolve 20.0 grams of HCl in 1.2 L of water, what is the pH of that solution?

0.34

1.7

0.55

0.46

17.

if the [H+] of a solution is 8.40 x 10^-3 mol/L the pOH of the solution will be

2.08

11.9

1.02

13.0

18.

Gas particles are in constant motion. They travel in straight lines, and they constantly bounce off each other and the walls of any container that holds them.

What does this constant collisions of gas particles against the walls of the container create?

Pressure

Density

Temperature

Magnetism

19.

Which of the following changes would cause a decrease in the volume of a gas?

Lowering the Temperature

Lowering the Pressure

Increasing the Temperature

Increasing the number of particles

20.

The pressure on a tank containing 0.30 moles of oxygen is 4.5 atm, and the temperature is 150 K. What is the volume of the gas?

0.82 L

10. L

0.10 L

1.2 L

100 %

CHEM20 Final Exam Review

Total questions: 20

Worksheet time: 39mins

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