Read a heating curve: what happens during melting and boiling
Grade 10 Science Worksheet - Building Confidence
Circle the best answer, or write your answer on the line.
Melting ice takes 334 J/g. How much energy melts 10 g of ice at 0 °C, Ari?
Melting ice takes 334 J/g. How much energy melts 25 g of ice at 0 °C, Bo?
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Heating curve for 1 g of ice starting at -20 °C, at 1 atm, with a particle box under each part. A to B: ice warms from -20 °C to 0 °C, 41.8 J (packed particles vibrate faster). B to C: flat at 0 °C while the ice melts, 334 J (particles loosen). C to D: water warms from 0 °C to 100 °C, 418 J (particles slide faster). D to E: flat at 100 °C while the water boils, 2260 J (particles break free). E to F: steam warms.
On the heating curve, what is happening on part B to C, Jun?
- The steam is warming
- The ice is melting
- The water is boiling
On the heating curve, which part shows liquid water warming, Kira?
- B to C
- C to D
- D to E
On the heating curve, what are the particles doing on part D to E, Luz?
- Packing into rows
- Breaking free of each other
- Vibrating faster in place
Heat keeps flowing into melting ice. What happens to its temperature while it melts, Milo?
- It rises steadily
- It stays at 0 °C
- It drops below 0 °C
A pot of water is boiling at 1 atm. What is its temperature while it boils, Pia?
- 100 °C
- 50 °C
- Rising past 120 °C
What is the change from solid to liquid called, Ren?
- Condensing
- Freezing
- Melting
What is the change from gas to liquid called, Tala?
- Melting
- Condensation
- Evaporation
What is the change straight from solid to gas called, Zee?
- Condensation
- Freezing
- Sublimation