Question

Select the statements below that are true when an ice cube is placed in a glass of hot water.?

- the energy gained by the ice cube will be equal to the energy lost by the water  
- the energy lost by the ice cube will be equal to the energy gained by the water  
- thermal energy will be transferred from the water to the ice cube  
- q(ice) = q (water)  
- thermal energy will flow from the ice cube to the water  
- q (water) = - q (ice)

Answer 1

- the energy gained by the ice cube will be equal to the energy lost by the water
True, there is a energy balance Elost = Egain

- the energy lost by the ice cube will be equal to the energy gained by the water
False, violates 0th law of thermodynamics --> temperature can't flow

- thermal energy will be transferred from the water to the ice cube
True, since it has higher T, therefore heat flows from thigh to low T

- q(ice) = q (water)

False, since one magnitude is negative and the other positive (i.e. gain/lost)

- thermal energy will flow from the ice cube to the water
False, it violates 2nd law as stated before

- q (water) = - q (ice)

True, since the lost energy = gain energy, the magnitude is the same, just change in energy

Answer 2

Moves from ice to water