Sixth-Grade Chemistry 9 / 10
Sixth-Grade Chemistry
A water molecule is written H₂O. How many atoms does it contain in total?
About this quiz
You once learned what matter is made of. How much stuck? Start with four questions around sixth-grade science, then climb through middle-school chemistry to an introductory high-school challenge.
How to play
- 1 Answer ten questions in order. There is no timer and speed is not scored.
- 2 Clear the opening level with three of four correct, then each higher level with two of three. Earlier levels must be cleared first.
- 3 Finish all ten to reveal your level and see the explanation for every answer.
The first level covers matter, mixtures and changes. The next levels introduce elements, atoms and chemical reactions. Your result reveals the highest level you clear in sequence, with your total score alongside it.