Energy Change Year 10 2026
Presentation
•
Chemistry
•
10th Grade
•
Easy
Muslim Mustapa
Used 1+ times
FREE Resource
30 Slides • 27 Questions
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Multiple Choice
Which of the following best describes the significance of energy transfer in chemical reactions?
It determines whether a reaction absorbs or releases energy.
It only affects the speed of the reaction.
It is not important in chemistry.
It only occurs in physical changes.
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Open Ended
What do we mean by the terms endothermic and exothermic? Can you give any examples of each?
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6
Multiple Choice
Which type of reaction absorbs heat from its surroundings, making them cooler?
Exothermic
Endothermic
Combustion
Neutralisation
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Open Ended
Describe the difference between exothermic and endothermic reactions in terms of energy transfer.
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Multiple Choice
A mixture bubbled vigorously but the temperature dropped 15°C. Is this reaction endothermic or exothermic?
Endothermic
Exothermic
Neutralisation
Combustion
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Multiple Select
Which of the following are examples of exothermic reactions?
Combustion of fuels
Photosynthesis
Detonation of explosives
Reaction of acids with metals
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Open Ended
Explain why the reaction between magnesium and hydrochloric acid is classified as exothermic.
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Fill in the Blanks
Type answer...
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Multiple Choice
What happens to the temperature of the reaction mixture during an exothermic reaction?
It rises
It falls
It stays the same
It fluctuates
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Open Ended
Explain how chemical energy is transformed during an exothermic reaction, using the temperature changes shown in the diagrams.
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Multiple Select
Which statements about exothermic reactions are correct?
Reactants have more chemical energy than products
Heat is lost to the surroundings
Products have more chemical energy than reactants
The reaction mixture gets colder
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Fill in the Blanks
Type answer...
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Open Ended
Write down one thing you knew before this lesson and two things you didn’t know before this lesson.
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Multiple Choice
Which of the following is an example of an endothermic reaction?
Photosynthesis
Combustion
Rusting of iron
Condensation
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Multiple Select
Select all processes that are examples of endothermic reactions.
Melting ice cubes
Evaporating water
Burning wood
Baking bread
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Open Ended
Explain how baking bread is an example of an endothermic process.
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Fill in the Blanks
Type answer...
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38
Multiple Choice
Which statement best describes what happens to the temperature of the reaction mixture during an endothermic reaction?
It increases rapidly and stays high.
It decreases as heat is absorbed and then returns to room temperature.
It remains constant throughout.
It fluctuates randomly.
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Open Ended
Describe the energy changes that occur during the reaction of ammonium nitrate with water.
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Open Ended
Explain why the enthalpy change (ΔH) is positive in endothermic reactions, using the energy profile diagrams shown.
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Multiple Choice
Which statement best describes the energy change in an endothermic reaction?
Energy is released and ΔH is negative.
Energy is taken in and ΔH is positive.
Energy is released and ΔH is positive.
Energy is taken in and ΔH is negative.
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Open Ended
Describe the difference between exothermic and endothermic reactions using energy profile diagrams.
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Fill in the Blanks
Type answer...
47
Multiple Select
Which of the following are true about endothermic reactions?
They take in energy from the surroundings.
The temperature of the surroundings increases.
ΔH is positive.
Products have more energy than reactants.
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Multiple Select
Which of the following statements about bond breaking and bond forming is correct?
Bond breaking is an exothermic process.
Bond forming is an endothermic process.
Bond breaking is an endothermic process.
Bond forming is an exothermic process.
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Multiple Choice
Which of the following best describes an endothermic reaction?
A reaction that releases heat to its surroundings
A reaction that absorbs heat from its surroundings
A reaction that produces light
A reaction that forms a precipitate
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Open Ended
Reflecting on today's lesson about energy transfer, what is one real-life example of an endothermic or exothermic process you have observed or learned about?
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