Question

Phoebe removes frozen vegetables from the freezer to make herself a stir-fry. She’s in a bit of a hurry, so she immerses the plastic bag of vegetables in a pot of warm water. As a result, the vegetables thaw in less than 15 minutes. Which sentences accurately describe the heat transfer that has taken place?
A.The plastic bag conducted heat to the vegetables.
B. The water and vegetables both lost an equal amount of heat.
C. Heat from the vegetables was transferred to the water.
D.Atoms in the vegetables began vibrating faster.
E.Water in contact with the plastic bag cooled down.

Answer 1

Answer:

A, D and E.

Explanation:

When two systems with different temperatures are in contact, they try to achieve thermal stability, which occurs when they have the same temperature. To this happens, heat must flow from the system with a higher temperature for the other.

So, the heat must flow from warm water to the vegetables. But there is a plastic bag between then, it must conduct that heat to the vegetables.

The water loses an amount of heat, and the vegetables gained the same amount of heat.

Heat is transferred from water to the vegetables.

When the vegetables receive heat, it changes the kinetic energy of its molecules: they start to vibrate faster, which makes the temperature increase.

The water is losing heat, so it's cooling down.

Answer 2

I think the answer would be D