Curriculum
Login

Curriculum

Chemistry — Second Secondary

Chemistry — Second Secondary

0/75

Chemistry — Second Secondary 2026/2027

0/47
Quiz

Question bank: Chapter 1 — Chemical Calculation

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
1.
In 2H₂ + O₂ → 2H₂O (gases, same T and P), the volume of oxygen required to react with 10 L of hydrogen is
20 L
10 L
5 L
2.5 L
2.
Which statement about a balanced equation is correct?
the number of moles of reactants always equals that of products
the total mass of reactants equals the total mass of products
the volume of liquids is conserved
the coefficients give masses in grams
3.
The limiting reactant is the reactant that
is present in the largest mass
is completely consumed first
is a gas
has the largest molar mass
  • 1
  • 2
  • 3