Suppose you have two insulated Euckets containing the same amount of water at room temperature. You also happen to have two blocks of metal of the same mass, both at the same temperature, warmer than the water in the buckets. One block is made of aluminum and one is made of copper. You put the aluminum block into one bucket of water, and the copper block into the other. After waiting a while $($long enough for the blocks and water to come to thermal equilibrium$)$ you measure the temperature of the water in both buckets. Which is warmer?

$($Note that on an exam, we'd give you the details about aluminum and copper. In this case, see if you can find the information you need yourself.$)$

The water in the bucket containing the copper block

The water in both buckets will be at the same temperature

The water in the bucket containing the aluminum block