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Chemistry quiz for grades 5 to 13

250 Chemistry questions across three grade bands. In the game you pick the subject and the band, and every duel draws questions you haven't had yet. Here are six examples, two from each band.

Play ChemistryGrades 5–7: 100 · Grades 8–10: 100 · Grades 11–13: 50

Sample questions

Grades 5–7 · Elements

Which element symbol stands for zinc?

  1. ASn
  2. BZn
  3. CNi
  4. DZr
Show the answer

B: Zn

Grades 5–7 · Everyday chemistry

What happens when you pour cooking oil into a glass of water?

  1. AIt dissolves completely
  2. BIt simply floats on top
  3. CIt sinks to the bottom at once
  4. DIt evaporates instantly
Show the answer

B: It simply floats on top

Grades 8–10 · Acids and alkalis

Which colour does blue litmus paper turn in an acidic solution?

  1. AIt stays blue
  2. BGreen
  3. CRed
  4. DYellow
Show the answer

C: Red

Grades 8–10 · Reactions

Which sign in an experiment often points to a chemical reaction?

  1. AA loud bang is always needed
  2. BColour change or gas formation
  3. CThe mass gets lighter
  4. DThe substance turns clear
Show the answer

B: Colour change or gas formation

Grades 11–13 · Atomic structure

What are the electrons of the outermost shell, which matter for reactions, called?

  1. AValence electrons
  2. BCore electrons
  3. CInner-shell electrons
  4. DIsotope electrons
Show the answer

A: Valence electrons

Grades 11–13 · Periodic table

What are elements such as silicon, with properties of both metals and non-metals, called?

  1. ANoble gases
  2. BHalogens
  3. CMetalloids
  4. DAlkali metals
Show the answer

C: Metalloids