Grade 9 · Chemistry
This quiz helps revise “Chemistry in everyday life” in Chemistry for grade 9. It has 25 questions in five categories: Acids and bases, Cleaning and water, Kitchen chemistry, Everyday polymers, Metals and batteries. Questions get harder as the points go up, from 100 to 500.
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.
What is the nature of an aqueous solution with pH 7 at 25 °C?
Which organic acid is characteristic of lemons and other citrus fruits?
Which acid is the…
In the gameWhat is NaHCO₃, commonly…
In the gameWhat type of reaction…
In the game
Ions of which two metals are mainly responsible for water hardness?
What is NaClO, the active ingredient in many liquid household bleaches, called?
What property of the…
In the gameUnlike soap, what do…
In the gameWhat are the spherical…
In the game
Which microorganism ferments sugars in dough and helps bread rise?
What color does starch turn when mixed with iodine solution?
What process changes the…
In the gameBesides carbon dioxide, what…
In the gameWhat spoilage process in…
In the gameWhat are the small molecules called that join repeatedly to form a polymer?
Which polymer has the repeating unit –CH₂–CH₂– and is widely used for plastic bags?
What class of polymer…
In the gameWhich polymer with repeating…
In the gameWhich element forms cross-links…
In the game
Besides oxygen, what substance is required for iron to rust?
Which metal coats steel during galvanizing to protect it from corrosion?
What do we call…
In the gameWhich alloying element in…
In the gameWhat substance with formula…
In the gameAll 25 questions and the answers are in the game. Invite your class or friends with a link — guests need no account.