Question 1

Which of the following best describes an intensive property?

Accepted Answer

A property independent of sample size

Question 2

A cube of a substance has edges of $$2.00\ \mathrm{cm}$$ and a mass of $$12.0\ \mathrm{g}. $$What is its density?

Accepted Answer

$$1.50\ \mathrm{g/cm^3$}$$

Question 3

Which of the following is a strong electrolyte when dissolved in water?

Accepted Answer

$$\mathrm{NaCl} ($$sodium chloride)

Question 4

Which of the following compounds is insoluble in water according to the solubility rules?

Accepted Answer

$$\mathrm{AgCl}$$

Question 5

What is the oxidation state of sulfur in $$\mathrm{SO_4$^{2-}}$$?

Accepted Answer

$$+6$$

Question 6

Which of the following is a redox reaction?

Accepted Answer

$$\mathrm{2Mg(s) + O_2$(g) \rightarrow 2MgO(s)}$$

Question 7

A sample of $$\mathrm{$$CaCO_3$$}$$ weighs $$300\ \mathrm{g}. $$What is the percentage by mass of carbon in the sample? ($$\mathrm{Ca} = 40.08$$, $$\mathrm{C} = 12.01$$, $$\mathrm{O} = 16.00)$$

Accepted Answer

$$4.00\%$$

Question 8

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture with uniform composition throughout

Question 9

What is the empirical formula of a compound that is $$80.0\%$$ carbon and $$20.0\%$$ hydrogen by mass?

Accepted Answer

$$\mathrm{CH_3$}$$

Question 10

Which of the following is a physical change?

Accepted Answer

Melting of ice

Question 11

Convert $$0.00348\ \mathrm{m^3$} to$$ $$\mathrm{cm^3$}.$$

Accepted Answer

$$3480\ \mathrm{cm^3$}$$

Question 12

Which of the following is the correct name for $$\mathrm{$$CuSO_4$$}$$?

Accepted Answer

Copper(II) sulfate

Question 13

Which of the following statements about solutions is correct?

Accepted Answer

The solvent is present in a higher concentration than the solute

Question 14

Which of the following is the correct formula for nitric acid?

Accepted Answer

$$\mathrm{$$HNO_3$$}$$

Question 15

A certain compound has an empirical formula of $$\mathrm{CH_3$}$$ and a molecular weight of $$30.0\ \mathrm{g/mol}. $$What is its molecular formula?

Accepted Answer

$$\mathrm{C_2H_6}$$

Question 16

Which of the following is a weak electrolyte?

Accepted Answer

$$\mathrm{CH_3COOH}$$

Question 17

Which of the following is the correct name for $$\mathrm{NH_4Cl}$$?

Accepted Answer

Ammonium chloride

Question 18

Which of the following is a chemical property?

Accepted Answer

Reactivity with acid

Question 19

Which of the following is the correct formula for perchloric acid?

Accepted Answer

$$\mathrm{$$HClO_4$$}$$

Question 20

Which of the following is the correct oxidation state for oxygen in $$\mathrm{H_2O_2} ($$hydrogen peroxide)?

Accepted Answer

$$-1$$

General Chemistry Fundamentals: Matter, Measurement, Compounds, Solutions, and Redox

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