Acids and Alkalis
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
Which of these describes a pH of 0?
A.Extremely acidic
B.Neutral
C.Extremely alkaline
D.Weakly acidic
- 2.
If you mix equal amounts of a strong acid (pH 1) and a strong alkali (pH 13), the resulting pH will be close to:
A.pH 1
B.pH 13
C.pH 7
D.pH 0
- 3.
Which of these colors is NOT usually found on the Universal Indicator scale for acids?
A.Red
B.Orange
C.Yellow
D.Violet
Download the worksheet for Acids and Alkalis - The pH Scale to practice offline. It includes additional chapter-level practice questions.
Indicators and Litmus Paper
SubtopicIndicators and Litmus Paper under Acids and Alkalis for Grade 6 IGCSE.
Preview questions (no answers)
- 1.
Why should you immediately wash your hands with plenty of water if you spill a dilute alkali on them?
A.Because alkalis can be corrosive to the skin
B.To make the alkali more concentrated
C.To help the alkali soak in
D.To change the color of your skin
- 2.
Many plants contain pigments that can act as indicators. Which part of the red cabbage is used to make an indicator solution?
A.The roots
B.The leaves
C.The seeds
D.The stem
- 3.
If you dip blue litmus paper into a solution of limewater (calcium hydroxide), what happens to the paper?
A.It turns red
B.It turns green
C.It stays blue
D.It turns orange
Download the worksheet for Acids and Alkalis - Indicators and Litmus Paper to practice offline. It includes additional chapter-level practice questions.
Neutralization Reactions
SubtopicNeutralization Reactions under Acids and Alkalis for Grade 6 IGCSE.
Preview questions (no answers)
- 1.
If a solution turns red litmus paper blue and has a pH of 12, it is a:
A.Strong acid
B.Weak acid
C.Strong alkali
D.Neutral liquid
- 2.
Which substance would have the lowest pH value?
A.Oven cleaner
B.Distilled water
C.Lemon juice
D.Baking soda
- 3.
In a neutralization reaction, the alkali 'cancels out' the:
A.Water
B.Salt
C.Acid
D.Indicator
Download the worksheet for Acids and Alkalis - Neutralization Reactions to practice offline. It includes additional chapter-level practice questions.
Safety in the Lab
SubtopicSafety in the Lab under Acids and Alkalis for Grade 6 IGCSE.
Preview questions (no answers)
- 1.
What is the final safety step you should take before leaving the lab after an experiment?
A.Put your books away
B.Wash your hands thoroughly with soap and water
C.Turn off the lights
D.Tell your friend goodbye
- 2.
Why is it important to avoid touching your face or rubbing your eyes while working with chemicals?
A.It might make your face dirty
B.You could transfer harmful acids or alkalis to your sensitive skin or eyes
C.It is considered bad manners
D.It will make your goggles foggy
- 3.
How can you tell if a clear liquid is a dangerous acid just by looking at the container it is in?
A.By the shape of the bottle
B.By checking the hazard symbols and labels on the bottle
C.By seeing if the liquid is bubbling
D.By checking how heavy the liquid looks
Download the worksheet for Acids and Alkalis - Safety in the Lab to practice offline. It includes additional chapter-level practice questions.