Question 1

Which subatomic particle is responsible for the identity of an element and is found inside the nucleus?

Accepted Answer

Proton

Question 2

How many electrons can the second energy level of an atom hold?

Accepted Answer

8

Question 3

A neutral atom of sodium (Na) has an atomic number of 11 and an atomic mass of 23. How many neutrons does it have?

Accepted Answer

12

Question 4

Which of the following best describes an ion?

Accepted Answer

An atom with a different number of electrons

Question 5

What type of bond is formed when two atoms share electrons unequally, resulting in partial charges?

Accepted Answer

Polar covalent bond

Question 6

Which property of water allows it to absorb large amounts of heat before changing temperature?

Accepted Answer

High specific heat capacity

Question 7

What is the pH of pure water?

Accepted Answer

7

Question 8

Which of the following is a correct example of a chemical compound?

Accepted Answer

NaCl

Question 9

If a carbon atom has 6 protons and 8 neutrons, which isotope is it?

Accepted Answer

Carbon-14

Question 10

Which statement about hydrogen bonds is TRUE?

Accepted Answer

They are responsible for water's high specific heat

Question 11

A solution is made by dissolving 5g of salt in 100mL of water. In this solution, what is the solvent?

Accepted Answer

Water

Question 12

Which of the following best explains why water forms a meniscus in a graduated cylinder?

Accepted Answer

Adhesion between water and glass

Question 13

What is the total number of oxygen atoms in the reactants of the following chemical equation? 6O2

Accepted Answer

12

Question 14

Which of the following is NOT a property of water due to hydrogen bonding?

Accepted Answer

Low boiling point

Question 15

Which element is most abundant in the human body by mass?

Accepted Answer

Oxygen

Question 16

What is the charge of a chloride ion (Cl-)?

Accepted Answer

Negative

Question 17

Which of the following best describes a molecule?

Accepted Answer

A group of atoms held together by covalent bonds

Question 18

A solution has a pH of 13. Which of the following best describes it?

Accepted Answer

Strong base

Question 19

Which of the following statements about isotopes is correct?

Accepted Answer

Isotopes have different numbers of neutrons

Question 20

Which type of bond is responsible for holding together the atoms in a molecule of oxygen gas (O2)?

Accepted Answer

Nonpolar covalent bond

Basic Chemistry Study Notes for General Chemistry

Study Guide - Practice Questions