Question

a bowl of hot soup that is left on the counter will eventually cool down. this is due to...
the hot soup reacting with the bowl.

the heat from the soup moving into the cooler air.

the cooler air moving unto the hot soup.

the molecules of the soup speeding up.

Explanation:

To determine the correct answer, we analyze the concept of heat transfer. Heat flows from a hotter object (the soup) to a cooler object (the surrounding air) until thermal equilibrium is reached.

• Option 1: The soup and bowl don't react chemically to cool the soup; heat transfer is physical, not a reaction.
• Option 2: Heat (thermal energy) from the hot soup moves to the cooler air (heat flows from high to low temperature), which explains the cooling.
• Option 3: Air doesn't "move onto" the soup to cool it; heat transfers from soup to air, not air moving into the soup's thermal energy transfer process.
• Option 4: When the soup cools, its molecules slow down, not speed up (higher temperature means faster molecules, lower means slower).

So the correct reasoning supports the second option.

Answer:

B. the heat from the soup moving into the cooler air.