ScienceYears 10–11Chemistry — Quantitative

Quantitative chemistry

Calculate relative formula mass, moles, concentration, percentage yield and atom economy; balance equations

What you'll learn

  1. 1

    Imagine baking a cake 🎂 — you need the right amount of flour, sugar, and eggs. In chemistry, we use equations to work out the exact amounts of chemicals we need.

  2. 2

    What does a balanced chemical equation tell you?

  3. 3

    Drag the number of each atom to balance this equation: H₂ + O₂ → H₂O

  4. 4

    Let's find the mass of 2 moles of water (H₂O).

  5. 5

    What is the mass of 1 mole of CO₂? (C=12, O=16)

  6. 6

    Use the number line to find the mass of 3 moles of MgO (Mg=24, O=16).

  7. 7

    If 1 mole of a substance has mass 20 g, what is the mass of 5 moles?

Practise Quantitative chemistry with Whizlo

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