Let’s go through each question one by one, step by step.
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Question 1: In an exothermic reaction, heat is ...
- “Exo” means “out.” So in an exothermic reaction, heat goes
out from the system to the surroundings.
- That means heat is
given out.
✔ Correct answer:
A — given out
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Question 2: In an endothermic reaction, heat is ...
- “Endo” means “in.” So in an endothermic reaction, heat is taken
into the system from the surroundings.
- That means heat is
taken in.
✔ Correct answer:
A — taken in
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Question 3: During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _____.
- Endothermic = takes heat IN from surroundings.
- If you touch the beaker (you’re part of the surroundings), your hand loses heat to the reaction → feels
cold.
✔ Correct answer:
B — Cold
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Question 4: If a chemical reaction is EXOTHERMIC, the temperature would...
- Exothermic releases heat → that heat warms up the surroundings.
- So temperature
increases.
✔ Correct answer:
C — Increase
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Question 5: Baking bread and cooking an egg are examples of...?
- Both need heat from outside (oven or stove) to happen.
- They absorb energy → so they are
endothermic processes.
✔ Correct answer:
A — Endothermic processes
*(Note: Option B says “Exothermic processess” — typo, but still wrong anyway.)*
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Question 6: What type of reaction is shown in the photo?
- The photo shows a big explosion with fire and light — like a bomb or nuclear blast.
- Explosions release huge amounts of heat and light → definitely
exothermic.
✔ Correct answer:
D — Exothermic
*(Option A “Isothermic” isn’t standard for reactions; C “None of the above” is wrong since D fits.)*
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Final Answer:
1. A
2. A
3. B
4. C
5. A
6. D
Parent Tip: Review the logic above to help your child master the concept of endothermic and exothermic reactions worksheet.
