Quiz about Exam Review: Chemical Interactions

Question 1

Balance the following chemical equation: $$H_2 + O_2 \rightarrow H_2O$$

Accepted Answer

$$2H_2 + O_2 \rightarrow 2H_2O$$

Answer

$$H_2 + O_2 \rightarrow 2H_2O$$

Answer

$$2H_2 + 2O_2 \rightarrow 2H_2O$$

Answer

$$H_2 + 2O_2 \rightarrow H_2O$$

Question 2

Identify the type of chemical reaction: $$2Na + Cl_2 \rightarrow 2NaCl$$

Accepted Answer

Synthesis

Answer

Decomposition

Answer

Single replacement

Answer

Combustion

Question 3

Which of the following is an acid?

Accepted Answer

HCl

Answer

NaOH

Answer

KCl

Answer

NH_3

Question 4

What is the pH of a neutral solution?

Accepted Answer

7

Answer

0

Answer

14

Answer

1

Question 5

Name the ionic compound $$Na_2SO_4$$ .

Accepted Answer

Sodium sulfate

Answer

Sodium sulfide

Answer

Sodium sulfite

Answer

Sodium sulfur

Question 6

Name the covalent compound $$CO_2$$ .

Accepted Answer

Carbon dioxide

Answer

Carbon monoxide

Answer

Carbon oxide

Answer

Dicarbon monoxide

Question 7

Which of the following reactions is a decomposition reaction?

Accepted Answer

$$2H_2O \rightarrow 2H_2 + O_2$$

Answer

$$2Na + Cl_2 \rightarrow 2NaCl$$

Answer

$$CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O$$

Answer

$$AgNO_3 + NaCl \rightarrow AgCl + NaNO_3$$

Question 8

Which of the following is a base?

Accepted Answer

NaOH

Answer

HCl

Answer

H_2SO_4

Answer

CH_3COOH

Question 9

Predict the products of the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH).

Accepted Answer

$$H_2O + NaCl$$

Answer

$$H_2 + NaCl$$

Answer

$$H_2O + NaOH$$

Answer

$$HCl + NaOH$$

Question 10

Determine the pH range of a basic solution.

Accepted Answer

7-14

Answer

0-7

Answer

0-14

Answer

6-8

Question 11

Which of the following is a covalent compound?

Accepted Answer

CO_2

Answer

NaCl

Answer

MgO

Answer

KBr

Question 12

Balance the following chemical equation: $$C_3H_8 + O_2 \rightarrow CO_2 + H_2O$$

Accepted Answer

$$C_3H_8 + 5O_2 \rightarrow 3CO_2 + 4H_2O$$

Answer

$$C_3H_8 + 4O_2 \rightarrow 3CO_2 + 4H_2O$$

Answer

$$C_3H_8 + 6O_2 \rightarrow 3CO_2 + 4H_2O$$

Answer

$$C_3H_8 + 5O_2 \rightarrow 2CO_2 + 4H_2O$$

Question 13

What is the correct formula for the ionic compound, lithium oxide?

Accepted Answer

Li2O

Answer

LiO

Answer

LiO2

Answer

Li2O2

Question 14

What is the formula for magnesium chloride?

Accepted Answer

MgCl2

Answer

MgCl

Answer

Mg2Cl

Answer

Mg(ClO₃)₂

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