Heat, mass, temperature change and specific heat
Grade 10 Science Worksheet
Circle the best answer, or write your answer on the line.
A 502 g iron block, c = 0.449 J/(g·°C), warms from 25 °C to 250 °C. How much heat does it absorb, Esme?
Water cools from 80 °C to 30 °C. Is its q positive or negative, Jun?
- Negative: it loses heat
- Positive: it loses heat
- Zero: it is still water
A sample cools from 85 °C to 21 °C. What is ΔT, Kira?
- −64 °C
- 106 °C
- 64 °C
A sample's temperature rises. What sign does q have, Luz?
- Zero
- Positive
- Negative
Which rearrangement of q = m × c × ΔT gives ΔT, Milo?
- ΔT = q ÷ (m × c)
- ΔT = q × m × c
- ΔT = m ÷ (q × c)
Which rearrangement of q = m × c × ΔT gives m, Noah?
- m = q ÷ (c × ΔT)
- m = q × c × ΔT
- m = c ÷ (q × ΔT)
Which rearrangement of q = m × c × ΔT gives c, Pia?
- c = q × m × ΔT
- c = ΔT ÷ (q × m)
- c = q ÷ (m × ΔT)
An 808 g iron pan needs 18,140 J and a 4,040 g iron pan needs 90,700 J to warm 50.0 °C. Why is c the same, Ren?
- The big pan is another metal
- Heat doesn't depend on mass
- c doesn't depend on mass
Twice the mass of water is warmed by the same ΔT. How much heat does it take, Tala?
- Half as much
- The same amount
- Twice as much
Equal masses of water and iron get equal heat. How do their temperature rises compare, Zee?
- They rise by the same amount
- Iron's rises about 9 times more
- Water's rises about 9 times more