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Heat and temperature

Lower Sec Science · Secondary 2 · Hard · Heat and temperature

A 500 g metal block at

90^\circ\text{C}

is placed into a beaker of water at

30^\circ\text{C}

. After some time, both reach the same temperature. Which statement best describes the heat transfer between the metal and the water?

Heat flows from the metal to the water until both reach the same temperature.
Heat flows from the water to the metal until both reach the same temperature.
Heat flows back and forth equally between metal and water at all times.
No heat flows because the total energy of the system is conserved.

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