Question

practice it!
francines uncle made some soup a few days ago.
he put the leftovers in baggies and placed them in the freezer.
one day after school, francine decided she wanted some of the soup as an after school snack and took one of the bagg
the freezer and placed it in a pot of hot water.
select the statement(s) that accurately predict what will happen.
the heat energy from the hot water will flow into the cold soup.
the heat energy will continue to flow until the water and the soup have switched temperatures. the soup will be
water will be cold.
the heat energy from the cold soup will flow into the hot water.
the energy will not flow because the soup is protected by the baggie.
the heat energy will continue to flow until both the water and the soup are the same temperature.

Explanation:

1. Heat transfer occurs from a higher - temperature object to a lower - temperature object. The hot water has a higher temperature than the cold soup, so heat energy from the hot water will flow into the cold soup. This makes the first statement correct.
2. Heat transfer stops when the two objects (water and soup) reach thermal equilibrium, which means they have the same temperature, not that they switch temperatures. So the second statement is incorrect.
3. Heat flows from hot to cold, not from cold to hot. So the third statement is incorrect.
4. The baggie is a conductor (or at least allows heat transfer to some extent, as we can thaw food in a baggie in hot water), so energy will flow. The fourth statement is incorrect.
5. Thermal equilibrium is reached when the temperatures of the two objects are the same, so heat energy will continue to flow until both the water and the soup are the same temperature. This makes the fifth statement correct.

Answer:

• The heat energy from the hot water will flow into the cold soup.
• The heat energy will continue to flow until both the water and the soup are the same temperature.