Acids and Bases: Interactive Quizzes and Learning Resources

Question 1

Which property is not a characteristic of acids?

Accepted Answer

Turn blue litmus paper red

Answer

React with metals to release hydrogen gas

Answer

Have a pH below 7

Answer

Can cause skin burns due to their corrosive nature

Question 2

What is produced when an acid reacts with a metal?

Accepted Answer

Salt and hydrogen gas

Answer

Salt and oxygen gas

Answer

Water and salt

Answer

No reaction occurs

Question 3

Which of the following is an example of an alkali?

Accepted Answer

Baking soda

Answer

Lemon juice

Answer

Vinegar

Answer

Salt

Question 4

What is the neutral pH value?

Accepted Answer

7

Answer

0

Answer

14

Answer

28

Question 5

What is the name of the scale used to measure the acidity or alkalinity of a solution?

Accepted Answer

pH scale

Answer

Mohs scale

Answer

Celsius scale

Answer

Kelvin scale

Question 6

What is the everyday name for the chemical sodium bicarbonate?

Accepted Answer

Baking soda

Answer

Sodium chloride

Answer

Sodium hydroxide

Answer

Sodium carbonate

Question 7

What safety measure is important when working with acids?

Accepted Answer

Wear eye protection

Answer

Handle acids with bare hands

Answer

Mix acids with water in any order

Answer

Drink diluted acids

Question 8

What is the equation for the reaction between an acid and an alkali?

Accepted Answer

Acid + Alkali → Salt + Water

Answer

Acid + Alkali → Salt + Hydrogen

Answer

Acid + Alkali → Base + Salt

Answer

Acid + Alkali → No reaction

Question 9

Which of the following is NOT a reaction of acids?

Accepted Answer

Oxidation

Answer

Neutralization

Answer

Reaction with metals

Answer

Reaction with carbonates

Question 10

What is the chemical reaction between an acid and an alkali called?

Accepted Answer

Neutralization

Answer

Combustion

Answer

Oxidation

Answer

Fermentation

Question 11

Which of these is a common example of an acid?

Accepted Answer

Lemon juice

Answer

Baking soda

Answer

Salt

Answer

Sugar

Question 12

What color does litmus paper turn when dipped in an alkali solution?

Accepted Answer

Blue

Answer

Red

Answer

No change

Answer

Green

Question 13

Which of these is a potential hazard associated with acids?

Accepted Answer

Corrosive to skin

Answer

Flammable

Answer

Explosive

Answer

Toxic

Question 14

What is the main purpose of the pH scale?

Accepted Answer

Measuring acidity or alkalinity

Answer

Measuring temperature

Answer

Measuring mass

Answer

Measuring volume

Question 15

Which of these acids is classified as weak?

Accepted Answer

Acetic acid

Answer

Hydrochloric acid

Answer

Sulfuric acid

Answer

Nitric acid

Question 16

What is the chemical formula for sulfuric acid?

Accepted Answer

H2SO4

Answer

HCl

Answer

HNO3

Answer

CH3COOH

Question 17

What is the pH range of acids?

Accepted Answer

0-6

Answer

7

Answer

8-14

Answer

1-14

Question 18

Which of the following is a common example of an alkali?

Accepted Answer

Baking soda

Answer

Lemon juice

Answer

Vinegar

Answer

Hydrochloric acid

Question 19

What happens when an acid reacts with an alkali?

Accepted Answer

Forms water and a salt

Answer

Produces hydrogen gas and a salt

Answer

Releases carbon dioxide gas and a salt

Answer

Creates oxygen gas and a salt

Question 20

What is the process called when acids dissolve in water?

Accepted Answer

Dissociation

Answer

Ionization

Answer

Neutralization

Answer

Diffusion

Question 21

Which of the following is a weak acid?

Accepted Answer

Acetic acid

Answer

Sulphuric acid

Answer

Hydrochloric acid

Answer

Nitric acid

Question 22

What colour does universal indicator turn in a neutral solution?

Accepted Answer

Green

Answer

Red

Answer

Blue

Answer

Yellow

Question 23

Which of the following is NOT a property of acids?

Accepted Answer

Turn blue litmus paper red

Answer

Sour taste

Answer

React with metals to produce hydrogen gas

Answer

Corrosive

Question 24

What is the pH range for an acid?

Accepted Answer

0-7

Answer

7-14

Answer

Below 0

Answer

Above 14

Question 25

Which of the following is a common example of an alkali?

Accepted Answer

Sodium hydroxide

Answer

Hydrochloric acid

Answer

Vinegar

Answer

Lemon juice

Question 26

What happens when an acid reacts with an alkali?

Accepted Answer

Produces a salt and water

Answer

Releases a gas

Answer

Forms a precipitate

Answer

Changes colour

Question 27

What is the name of the gas produced when an acid reacts with a carbonate?

Accepted Answer

Carbon dioxide

Answer

Hydrogen

Answer

Oxygen

Answer

Nitrogen

Question 28

Which of the following can be used to neutralise an acid spill?

Accepted Answer

Alkali

Answer

Water

Answer

Salt

Answer

Sugar

Question 29

What is the term used to describe a substance that can neutralise both acids and alkalis?

Accepted Answer

Buffer

Answer

Catalyst

Answer

Indicator

Answer

Antacid

Question 30

Which of the options provided is an example of a base?

Accepted Answer

Sodium hydroxide

Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Sulfuric acid

Question 31

When an acid and a base react, what is the typical result?

Accepted Answer

A salt and water are formed

Answer

A gas is produced

Answer

A precipitate is formed

Answer

No reaction occurs

Question 32

Which substance has a neutral pH of 7?

Accepted Answer

Water

Answer

Lemon juice

Answer

Milk

Answer

Vinegar

Question 33

What is the fundamental difference between a strong acid and a weak acid?

Accepted Answer

Strong acids ionize completely in water, while weak acids ionize partially

Answer

Weak acids are more corrosive than strong acids

Answer

Strong acids have a higher pH than weak acids

Answer

There is no distinction between strong and weak acids

Question 34

What is the chemical formula for hydrochloric acid?

Accepted Answer

HCl

Answer

NaOH

Answer

H2SO4

Answer

CH3COOH

Question 35

What is the reaction between an acid and a base called?

Accepted Answer

Neutralization

Answer

Combustion

Answer

Oxidation

Question 36

What type of substance has a pH value less than 7?

Accepted Answer

Acid

Answer

Base

Answer

Neutral

Question 37

What happens to the speed of a reaction between an acid and an alkali when you heat it up?

Accepted Answer

The reaction speeds up.

Answer

The reaction slows down.

Answer

The reaction speed stays the same.

Question 38

What is the name of the reaction between an acid and a base?

Accepted Answer

Neutralization reaction

Answer

Redox reaction

Answer

Displacement reaction

Answer

Combustion reaction

Question 39

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Citric acid

Answer

Acetic acid

Answer

Carbonic acid

Question 40

Which of the following is a weak acid?

Accepted Answer

Acetic acid (found in vinegar)

Answer

Sulfuric acid

Answer

Hydrochloric acid

Question 41

What is the pH of a neutral solution?

Accepted Answer

7

Answer

10

Answer

0

Answer

14

Question 42

Which of the following is a property of acids?

Accepted Answer

Sour taste

Answer

Sweet taste

Answer

Slippery feel

Answer

Bitter taste

Question 43

Which of the following is a property of alkalis?

Accepted Answer

Bitter taste and slippery feel

Answer

Sour taste and bitter taste

Answer

Sweet taste and slippery feel

Answer

Sour taste and slippery feel

Question 44

What is the chemical reaction called when an acid reacts with an alkali?

Accepted Answer

Neutralization

Answer

Reduction

Answer

Oxidation

Answer

Combustion

Question 45

What are the products of a neutralization reaction?

Accepted Answer

Salt and water

Answer

Acid and alkali

Answer

Oxygen and hydrogen

Answer

Carbon dioxide and water

Question 46

Which of the following is an everyday use for alkalis?

Accepted Answer

Making soap and cleaning clothes

Answer

Making batteries

Answer

Cooking food

Question 47

Which of these is an alkali?

Accepted Answer

Sodium hydroxide (NaOH)

Answer

Hydrochloric acid (HCl)

Answer

Vinegar (acetic acid)

Answer

Lemon juice (citric acid)

Question 48

What is the approximate pH range of a strong acid?

Accepted Answer

0-2

Answer

4-6

Answer

7-9

Answer

10-14

Question 49

What happens when an acid reacts with an alkali?

Accepted Answer

They neutralize each other, forming salt and water.

Answer

The solution becomes more alkaline.

Answer

The solution becomes more acidic.

Question 50

Which of these is a common use of an alkali in everyday life?

Accepted Answer

Cleaning products

Answer

Making vinegar

Answer

Preserving food

Answer

Production of soft drinks

Question 51

If you mix hydrochloric acid (HCl) with sodium hydroxide (NaOH), what salt is formed?

Accepted Answer

Sodium chloride (NaCl)

Answer

Potassium chloride (KCl)

Answer

Calcium chloride (CaCl2)

Answer

Sodium hydrogen carbonate (NaHCO3)

Question 52

Which substance has a pH closest to 7?

Accepted Answer

Pure water

Answer

Lemon juice

Answer

Soap solution

Answer

Stomach acid

Question 53

A farmer wants to make their soil less acidic. What should they add?

Accepted Answer

Lime (calcium oxide)

Answer

Lemon juice

Answer

Vinegar

Answer

Hydrochloric acid

Question 54

Which pair of substances would react to make a neutral solution?

Accepted Answer

Hydrochloric acid (HCl) and sodium hydroxide (NaOH)

Answer

Sulphuric acid (H2SO4) and nitric acid (HNO3)

Answer

Calcium oxide (CaO) and potassium hydroxide (KOH)