Oxides
- 100
Which oxide escapes as bubbles from sparkling water?
- 200
What is the formula of the white oxide formed when magnesium burns?
- 300
What is the formula…
In the game - 400
Which acid forms when…
In the game - 500
Iron has valency III…
In the game
Grade 8 · Chemistry
Chemistry quiz for grade 8: Oxides, acids, bases and salts
This quiz helps revise “Oxides, acids, bases and salts” in Chemistry for grade 8. It has 25 questions in five categories: Oxides, Acids, Bases, Salts, Reactions. Questions get harder as the points go up, from 100 to 500.
A peek at the questions
The 100- and 200-point questions are open here. The rest show only their first words, and there are no answers: all of that is in the game itself.
Acids
- 100
Which acid is present in the stomach's digestive juices?
- 200
Which indicator is colourless in acid but turns pink in a basic solution?
- 300
Which acid has…
In the game - 400
What do we call…
In the game - 500
What is the…
In the game
Bases
- 100
What do we call bases that dissolve in water?
- 200
What colour does red litmus turn in a basic solution?
- 300
Which compound with the…
In the game - 400
How many hydroxide…
In the game - 500
What is the formula…
In the game
Salts
- 100
What is the formula of table salt?
- 200
What is the formula of calcium carbonate, the main compound in natural chalk?
- 300
What is the charge…
In the game - 400
What is the name…
In the game - 500
Aluminium forms Al³⁺ ions…
In the game
Reactions
- 100
What is the reaction called when an acid and a base cancel each other's characteristic properties?
- 200
Besides a salt, what forms when an acid reacts with a basic oxide?
- 300
Which gas bubbles off…
In the game - 400
Heating copper(II) hydroxide makes…
In the game - 500
Solutions of BaCl₂ and…
In the game
Play this quiz
All 25 questions and the answers are in the game. Invite your class or friends with a link — guests need no account.
How it works
- Pick a quiz and press “Play”.
- Send students or friends the link — they join from a phone or a computer.
- Choose questions on the board, buzz in first and collect points.