Chemistry Basics Quiz

Question 1

What is the chemical symbol for gold?

Accepted Answer

Au

Answer

Go

Answer

Gd

Answer

Gl

Question 2

What is the most abundant element in the Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Carbon dioxide

Answer

Argon

Question 3

What is the chemical formula for water?

Accepted Answer

H₂O

Answer

HO

Answer

H₂O₂

Answer

HO₂

Question 4

How many elements are in the periodic table (as of 2024)?

Accepted Answer

118

Answer

108

Answer

112

Answer

124

Question 5

What is the pH of pure water?

Accepted Answer

7

Answer

5

Answer

6

Answer

8

Question 6

Which element is the lightest on the periodic table?

Accepted Answer

Hydrogen

Answer

Helium

Answer

Lithium

Answer

Oxygen

Question 7

What type of bond involves the sharing of electrons between atoms?

Accepted Answer

Covalent bond

Answer

Ionic bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 8

What is the chemical symbol for iron?

Accepted Answer

Fe

Answer

Ir

Answer

In

Answer

Io

Question 9

What happens during an exothermic chemical reaction?

Accepted Answer

Heat is released

Answer

Heat is absorbed

Answer

No energy change occurs

Answer

Light is always produced

Question 10

Which gas makes up the 'bubbles' in carbonated drinks?

Accepted Answer

Carbon dioxide

Answer

Oxygen

Answer

Nitrogen

Answer

Carbon monoxide

Question 11

What is the most electronegative element?

Accepted Answer

Fluorine

Answer

Chlorine

Answer

Oxygen

Answer

Nitrogen

Question 12

What is a mixture of iron and carbon called?

Accepted Answer

Steel

Answer

Bronze

Answer

Brass

Answer

Pewter

Question 13

Which scientist developed the first periodic table?

Accepted Answer

Dmitri Mendeleev

Answer

Antoine Lavoisier

Answer

John Dalton

Answer

Ernest Rutherford

Question 14

What is the chemical formula for table salt?

Accepted Answer

NaCl

Answer

KCl

Answer

CaCl₂

Answer

MgCl₂

Question 15

What is the hardest natural substance on Earth?

Accepted Answer

Diamond

Answer

Quartz

Answer

Topaz

Answer

Corundum

Question 16

Which process converts liquid water into water vapour?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Sublimation

Answer

Precipitation

Question 17

What are the three states of matter?

Accepted Answer

Solid, liquid, gas

Answer

Solid, liquid, plasma

Answer

Liquid, gas, plasma

Answer

Solid, vapour, gas

Question 18

What is the atomic number of carbon?

Accepted Answer

6

Answer

4

Answer

8

Answer

12

Question 19

What is the name of the process by which plants make food using sunlight?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Fermentation

Answer

Transpiration

Question 20

Which noble gas is used in party balloons to make them float?

Accepted Answer

Helium

Answer

Neon

Answer

Argon

Answer

Krypton