Question 1

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

Accepted Answer

Proton

Question 2

If an atom has an atomic number of 8 and an atomic mass of 16, how many neutrons does it have?

Accepted Answer

8

Question 3

Which of the following best describes an ion?

Accepted Answer

A particle with a different number of protons and electrons

Question 4

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

Accepted Answer

Polar covalent bond

Question 5

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

Accepted Answer

High specific heat capacity

Question 6

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

Accepted Answer

Water

Question 7

Which of the following is true about isotopes?

Accepted Answer

They have the same number of protons but different numbers of neutrons

Question 8

What is the electron configuration for an atom with 10 electrons?

Accepted Answer

2 electrons in the first energy level, 8 in the second

Question 9

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

Accepted Answer

Adhesion between water and glass

Question 10

A chemical equation is given as $$C_6H_{12}O_6$ + 6O_2 ightarrow 6CO_2 + 6H_2O + 	ext{energy}. $$How many oxygen atoms are present in the reactants?

Accepted Answer

18

Question 11

Which of the following statements about elements is correct?

Accepted Answer

Elements are composed of only one type of atom

Question 12

What is the pH of pure water?

Accepted Answer

7.0

Question 13

Which of the following is a real-life example of evaporative cooling?

Accepted Answer

Sweating

Question 14

Which of the following best describes a hydrogen bond?

Accepted Answer

A bond formed between a hydrogen atom and another atom due to polarity

Question 15

If sodium (Na) loses one electron to become Na$$^+$$, how many electrons does it have if its atomic number is 11?

Accepted Answer

10

Question 16

Which property of water allows it to dissolve many substances, making it a versatile solvent?

Accepted Answer

High polarity

Question 17

Which of the following is a compound?

Accepted Answer

NaCl

Question 18

What is the main difference between a molecule and a compound?

Accepted Answer

A molecule is made of atoms of the same element, while a compound is made of different elements

Question 19

Which of the following best describes the arrangement of electrons in energy levels for a stable atom?

Accepted Answer

All energy levels being used must be full

Question 20

Which of the following is true about the atomic number of an element?

Accepted Answer

It is equal to the number of protons in the nucleus

Basic Chemistry Concepts for General Chemistry

Study Guide - Practice Questions