Question 1

Which of the following statements about ionic and covalent bonding is correct?

Accepted Answer

Ionic bonds form between a metal and a nonmetal by transferring electrons.

Question 2

Which compound is named correctly according to IUPAC rules?

Accepted Answer

NaCl: Sodium chloride

Question 3

What is the correct formula for ammonium sulfate?

Accepted Answer

$$\mathrm{(NH_4$)_2SO_4}$$

Question 4

Which of the following ions is polyatomic?

Accepted Answer

$$\mathrm{SO_4$^{2-}}$$

Question 5

Which element has the highest electronegativity?

Accepted Answer

Fluorine

Question 6

As you move from left to right across a period in the periodic table, which trend is observed?

Accepted Answer

Electronegativity increases

Question 7

Which of the following molecules is polar?

Accepted Answer

$$\mathrm{H_2O}$$

Question 8

What is the correct Lewis structure for $$\mathrm{NH_3$}$$?

Accepted Answer

Nitrogen with three single bonds to hydrogen and one lone pair

Question 9

Which of the following best describes the geometry of $$\mathrm{CH_4$}$$ according to VSEPR theory?

Accepted Answer

Tetrahedral

Question 10

Which of the following is a functional group found in alcohols?

Accepted Answer

Hydroxyl group ($$\mathrm{-OH})$$

Question 11

Which of the following is an isomer of butane ($$\mathrm{C_4H_{10}}$$)?

Accepted Answer

2-methylpropane

Question 12

Which of the following best explains why sodium reacts vigorously with water?

Accepted Answer

Sodium has a low ionization energy and readily loses an electron to form $$\mathrm{Na^+}.$$

Question 13

Which of the following elements is most likely to form a cation?

Accepted Answer

Sodium

Question 14

Which of the following best describes the trend in atomic radius down a group in the periodic table?

Accepted Answer

Atomic radius increases due to additional electron shells.

Question 15

Which of the following is the correct name for $$\mathrm{Fe_2O_3}$$?

Accepted Answer

Iron(III) oxide

Question 16

Which of the following best describes the shape and bond angle of $$\mathrm{CO_2$}$$?

Accepted Answer

Linear, $$180^\circ$$

Question 17

Which of the following statements about the periodic table is correct?

Accepted Answer

Elements in the same group have the same number of valence electrons.

Question 18

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

Accepted Answer

$$\mathrm{Ca_3$(PO_4$)_2}$$

Question 19

Which of the following best explains why water is a polar molecule?

Accepted Answer

Water has a bent shape and unequal sharing of electrons.

Question 20

Which of the following is a correct example of a functional group and its class of compound?

Accepted Answer

Ketone: $$\mathrm{C=O} ($$within carbon chain)

Unit 4: Chemical Bonding, Periodic Trends, and Organic Chemistry – Study Notes

Study Guide - Practice Questions