Question 1

Which of the following compounds is ionic?

Accepted Answer

NaCl

Question 2

What is the correct formula for ammonium sulfate?

Accepted Answer

NH$$_4_2$SO_4$

Question 3

Which of the following ions has the same electron configuration as neon?

Accepted Answer

Na$$^+$$

Question 4

What is the name of the compound N$$_2O$_5$$?

Accepted Answer

Dinitrogen pentoxide

Question 5

Which of the following molecules is nonpolar?

Accepted Answer

CO$$_2$$

Question 6

What is the correct name for the ion SO$$_4$$^{2-}$$?

Accepted Answer

Sulfate

Question 7

Which of the following prefixes is used for seven atoms in a molecular compound?

Accepted Answer

Hepta-

Question 8

Which of the following statements about electronegativity is correct?

Accepted Answer

Electronegativity increases across a period from left to right.

Question 9

Which of the following is a polyatomic ion?

Accepted Answer

NO$$_3^-$$

Question 10

A sample of gas has a pressure of 760 mmHg. What is this pressure in atmospheres?

Accepted Answer

$$1.0$$ atm

Question 11

Which of the following compounds contains both ionic and covalent bonds?

Accepted Answer

NaNO$$_3$$

Question 12

Which intermolecular force is strongest in H$$_2O$$?

Accepted Answer

Hydrogen bonding

Question 13

What is the correct formula for calcium phosphate?

Accepted Answer

Ca$$_3(PO$_4$$)$$_2$$

Question 14

Which of the following molecules has a bent shape?

Accepted Answer

H$$_2O$$

Question 15

Which of the following is the correct name for P$$_2O$_5$$?

Accepted Answer

Diphosphorus pentoxide

Question 16

Which of the following is a noble gas?

Accepted Answer

Neon

Question 17

What is the charge on the phosphate ion?

Accepted Answer

$$-3$$

Question 18

Which of the following best describes the difference between endothermic and exothermic reactions?

Accepted Answer

Endothermic reactions absorb heat, exothermic reactions release heat.

Question 19

Which of the following is the correct formula for the nitrite ion?

Accepted Answer

NO$$_2^-$$

Question 20

A balloon contains 2.0 moles of helium gas at STP. What is its volume?

Accepted Answer

$$44.8 L$$

GOB Chemistry Study Guide: Chapters 6, 7, and 8 (Ions, Compounds, Molecular Naming, Electronegativity, Gases)

Study Guide - Practice Questions