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Course: Edexcel Modular – OL (Chemistry)
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Edexcel Modular – OL (Chemistry)

1. Principles of Chemistry

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2. Inorganic Chemistry

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3. Physical Chemistry

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4. Organic Chemistry

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Quiz

Energetics – Check yourself

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Energetics Edexcel O Level Modular Chemistry check yourself quiz: free practice for Edexcel Modular – OL (chemistry). Work through this Energetics Edexcel O Level Modular Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 3a Energetics — Notes lesson. More practice: Edexcel Modular – OL (chemistry) — all units. Syllabus: Pearson Edexcel International GCSEs.

  • Questions count: 9
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
What is the sign of ΔH for an exothermic reaction?
Positive
Negative
Zero
It depends on the temperature
2.
100 g of water rises by 5.0 °C. How much energy was transferred? (c = 4.2 J/g/°C)
2100 J
420 J
21 J
500 J
3.
Breaking chemical bonds is:
Exothermic
Neither exothermic nor endothermic
Always faster than making bonds
Endothermic
4.
Why is a polystyrene cup used in calorimetry?
It reacts with acids
It reduces heat loss
It speeds up the reaction
It measures the temperature
5.
On an energy level diagram for an endothermic reaction:
Products are higher than reactants
Products are lower than reactants
Reactants and products are level
There is no activation energy
6.
Which statement best describes Activation energy?
The energy needed to raise 1 g of a substance by 1 °C; for water 4.2 J/g/°C.
A reaction that takes in heat energy from the surroundings, so the temperature falls.
The minimum energy colliding particles need in order to react.
The energy needed to break one mole of a particular covalent bond, in kJ/mol.
7.
Which statement best describes Specific heat capacity (c)?
The energy needed to raise 1 g of a substance by 1 °C; for water 4.2 J/g/°C.
A reaction that transfers heat energy to the surroundings, so the temperature rises.
The energy change per mole of a stated reactant or product.
The minimum energy colliding particles need in order to react.
8.
Which statement best describes Energy level diagram?
The heat energy transferred in a reaction at constant pressure, in kJ/mol.
A diagram showing the relative energies of reactants and products.
The energy needed to break one mole of a particular covalent bond, in kJ/mol.
Measuring heat energy changes by recording the temperature change of a known mass of water or solution.
9.
Which statement best describes Exothermic reaction?
A reaction that transfers heat energy to the surroundings, so the temperature rises.
The heat energy transferred in a reaction at constant pressure, in kJ/mol.
The energy needed to raise 1 g of a substance by 1 °C; for water 4.2 J/g/°C.
Measuring heat energy changes by recording the temperature change of a known mass of water or solution.
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Part of 3. Physical Chemistry — see every lesson and quiz in this unit.
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