Question 1

Which of the following best describes the difference between an ionic bond and a covalent bond?

Accepted Answer

An ionic bond involves the transfer of electrons from a metal to a nonmetal, while a covalent bond involves the sharing of electrons between two or more nonmetals.

Question 2

Which of the following is the correct empirical formula for glucose, whose molecular formula is $$C_6H_{12}O_6$?

Accepted Answer

$$CH_2O$$

Question 3

Which of the following compounds is classified as a molecular compound?

Accepted Answer

$$CO_2$$

Question 4

Which of the following is a correct name for the compound $$FeCl_3$$?

Accepted Answer

Iron(III) chloride

Question 5

What is the formula for the ionic compound formed between magnesium and nitrogen?

Accepted Answer

$$Mg_3N_2$$

Question 6

Which of the following is a polyatomic ion?

Accepted Answer

$$NO_3$$^-$$

Question 7

Which of the following best describes a molecular element?

Accepted Answer

An element that exists as molecules composed of two or more atoms of the same element bonded together.

Question 8

What is the correct name for $$CuSO_4$$ \cdot 5H_2O$$?

Accepted Answer

Copper(II) sulfate pentahydrate

Question 9

Which of the following is the correct formula for dinitrogen pentoxide?

Accepted Answer

$$N_2O_5$$

Question 10

Which of the following is the correct name for $$HNO_2 (aq$$)?

Accepted Answer

Nitrous acid

Question 11

A student is asked to write the formula for aluminum phosphide. Which of the following is correct?

Accepted Answer

$$AlP$$

Question 12

Which of the following best explains why ionic compounds are generally solid and form crystalline lattices at room temperature?

Accepted Answer

Because the ions are held together by strong electrostatic forces in a repeating three-dimensional pattern.

Question 13

Which of the following is the correct name for $$NaHCO_3$$?

Accepted Answer

Sodium bicarbonate

Question 14

Which of the following is a correct formula for iron(III) oxide?

Accepted Answer

$$Fe_2O_3$$

Question 15

Which of the following is the correct name for $$P_4S_3$$?

Accepted Answer

Tetraphosphorus trisulfide

Question 16

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

Accepted Answer

$$Ca_3N_2$$

Question 17

Which of the following is a binary acid?

Accepted Answer

$$HCl$$

Question 18

A sample of a compound contains only sodium and oxygen. Which of the following is the correct formula for this compound if it is charge neutral?

Accepted Answer

$$Na_2O$$

Question 19

Which of the following is the correct name for $$NH_4NO_3$$?

Accepted Answer

Ammonium nitrate

Question 20

Which of the following is the correct formula for the compound formed between barium and sulfate?

Accepted Answer

$$BaSO_4$$

Molecules, Compounds, and Chemical Equations: Study Notes for Chem 120 Unit 3

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