Question

sorry for repost but I really need help to understand this

In a room at 21 °C, 60 mL of water is poured into each of three cups. The water in cup A is at 15 °C, the water in cup B is at 25 °C, and the water in cup C is at 45 °C.

c) Describe what happens to the energy present in each cup over the one-hour period, and describe why

Answer 1

temperature is the measure of
... the average internal kinetic energy of a substance
... the particles (atoms, molecules) that comprise the substance

this heat energy can flow (transfer), based on temperature gradients

cup A is below room temperature
... so it will absorb heat from the room, which will raise its temperature

cup B is above room temperature
... it will lose heat to the room, which will lower its temperature

cup C is above room temperature
... it will lose heat to the room, which will lower its temperature
... it has a greater temperature differential than A or B
... so it will lose heat faster ... the temperature change will be greater