Junior and senior secondary students
Chemistry — Junior / Secondary
Atomic structure, bonding, the mole, equations and acids/bases.
Example questions at this level
- 1Balance: C₃H₈ + O₂ → CO₂ + H₂O
- 2Find the pH of 0.01 M HCl
- 3How many moles are in 25 g of CaCO₃?
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