Purpose: Verify SCH3U thermal-energy basics, mole calculations, and word-equation skills before thermochemistry.
Q1 — Mole calc
How many moles in 24.0 g of carbon?
Reveal
24.0/12.01 ≈ 2.00 mol.
Q2 — Heat capacity
Recall the formula relating heat to mass, specific heat, and ΔT.
Reveal
q = m·c·ΔT.
Q3 — Endo vs exo
Combustion: endothermic or exothermic? Sign of ΔH?
Reveal
Exothermic; ΔH < 0.
Q4 — Reaction rate basics
List 3 factors affecting reaction rate (SCH3U).
Reveal
Concentration, temperature, surface area, catalyst, nature of reactants.
Q5 — Stoichiometry
If 4.0 mol H₂ reacts with O₂ via 2H₂ + O₂ → 2H₂O, how many mol H₂O form?
Reveal
4.0 mol H₂O (1:1 ratio).
Q6 — Reflection
Which is harder for you: solving for ΔT in q=mcΔT, or balancing equations? Explain.
Q7 — Units
Convert 4500 J to kJ.
Reveal
4.5 kJ.
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