Curriculum
Course: HIA International — Grade 7
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Curriculum

HIA International — Grade 7

Unit 1: Breathing and respiration

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Unit 2: Dissolving, solubility and chromatography

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Unit 3: Forces, motion and pressure

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Unit 4: Ecosystems

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Unit 5: Atoms, purity and climate

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Unit 6: Light and objects in space

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Unit 7: Nutrition, health and movement

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Unit 8: Energy changes and reactions of metals

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Unit 9: Magnetism and electromagnets

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Quiz

8.2 Endothermic reactions — Visual & Photo Quiz

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  • Questions count: 1
  • Passing grade: B+
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1.
Look at the instant cold pack experiment: dissolving ammonium nitrate in water causes the thermometer reading to drop significantly. Why does this endothermic process feel cold?
Dr Dabour Hub Academy - figure 1
Thermal energy is absorbed from the surroundings into chemical bond energy, causing the temperature around it to fall
Heat energy is destroyed by the chemical formula
The water turns into liquid nitrogen
Oxygen gas freezes into solid crystals
Part of Unit 8: Energy changes and reactions of metals — see every lesson and quiz in this unit.
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