Question 1

Which of the following compounds is classified as molecular (covalent) rather than ionic?

Accepted Answer

CO

Question 2

According to the law of definite proportions, if 17.0 g of ammonia ($$\mathrm{NH_3$}) $$contains 14.0 g of nitrogen and 3.0 g of hydrogen, what is the mass ratio of nitrogen to hydrogen in ammonia?

Accepted Answer

$$\frac{14.0}{3.0} = 4.67$$

Question 3

What is the correct formula for the ionic compound formed between aluminum and oxygen?

Accepted Answer

$$\mathrm{Al_2O_3}$$

Question 4

Which of the following is the correct name for $$\mathrm{Cu(NO_3$)_2}$$?

Accepted Answer

Copper(II) nitrate

Question 5

What is the correct formula for potassium carbonate dihydrate?

Accepted Answer

$$\mathrm{K_2CO_3} \cdot 2\mathrm{H_2O}$$

Question 6

Which of the following is the correct name for $$\mathrm{H_2SO_4}$$?

Accepted Answer

Sulfuric acid

Question 7

Classify $$\mathrm{Fe_2O_3} as $$ionic or molecular, and provide its correct name.

Accepted Answer

Ionic, iron(III) oxide

Question 8

Which of the following is the correct formula for iron(II) phosphate?

Accepted Answer

$$\mathrm{Fe_3$(PO_4$)_2}$$

Question 9

Which of the following is the correct name for $$\mathrm{N_2Se_4}$$?

Accepted Answer

Dinitrogen tetraselenide

Question 10

Which of the following is the correct formula for magnesium nitride?

Accepted Answer

$$\mathrm{Mg_3N_2}$$

Question 11

A patient is given a medication containing $$\mathrm{Ba(OH)_2}. $$What is the correct name for this compound?

Accepted Answer

Barium hydroxide

Question 12

Which of the following is the correct name for $$\mathrm{$$HNO_3$$}$$?

Accepted Answer

Nitric acid

Question 13

Which of the following is the correct formula for copper(I) chloride?

Accepted Answer

$$\mathrm{CuCl}$$

Question 14

Which of the following is the correct name for $$\mathrm{K_2SO_4}$$?

Accepted Answer

Potassium sulfate

Question 15

Which of the following is the correct formula for disulfur tetrafluoride?

Accepted Answer

$$\mathrm{S_2F_4}$$

Question 16

Which of the following is the correct name for $$\mathrm{Pb(C_2H_3O_2)_2}$$?

Accepted Answer

Lead(II) acetate

Question 17

Which of the following is the correct formula for phosphorous trichloride?

Accepted Answer

$$\mathrm{$$PCl_3$$}$$

Question 18

Which of the following is the correct name for $$\mathrm{$$CoSO_4$$} \cdot 7\mathrm{H_2O}$$?

Accepted Answer

Cobalt(II) sulfate heptahydrate

Question 19

Which of the following is the correct formula for silver nitrate?

Accepted Answer

$$\mathrm{$$AgNO_3$$}$$

Question 20

Which of the following is the correct name for $$\mathrm{$$SnO_2$$}$$?

Accepted Answer

Tin(IV) oxide

Ionic and Molecular Compounds: Classification, Nomenclature, and Law of Definite Proportions

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