When ice-cream melts :
A. Heat is lost from the ice-cream
B. Heat is gained by the ice-cream
C. Heat is lost from the surroundings
D. Heat is gained by the surroundings

Options

A. A and B
B. B and C
C. A and C
D. C and D

Answer

To solve the question "When ice-cream melts," we need to analyze the process of melting and the heat exchange involved. Here’s a step-by-step breakdown:

### Step 1: Understand the Process of Melting
- Ice-cream is a solid at low temperatures. When it is exposed to a warmer environment, it begins to melt.
- Melting is a physical change where a solid turns into a liquid due to the absorption of heat.

**Hint:** Think about what happens to ice-cream when you take it out of the freezer.

### Step 2: Identify Heat Transfer
- When ice-cream melts, it absorbs heat from its surroundings. This is necessary for the ice-cream to change from solid to liquid.
- The heat absorbed by the ice-cream is what causes it to melt.

**Hint:** Consider where the heat is coming from when the ice-cream is melting.

### Step 3: Analyze the Surroundings
- As the ice-cream absorbs heat, the surroundings lose that amount of heat. This means the temperature of the surroundings decreases slightly.
- Therefore, the surroundings are losing heat while the ice-cream is gaining heat.

**Hint:** Reflect on how the environment changes when something cold is placed in a warmer area.

### Step 4: Evaluate the Options
- A. Heat is lost from the ice-cream: This is incorrect because the ice-cream is gaining heat.
- B. Heat is gained by the ice-cream: This is correct because the ice-cream absorbs heat to melt.
- C. Heat is lost from the surroundings: This is also correct because the surroundings lose heat to the ice-cream.
- D. Heat is gained by the surroundings: This is incorrect because the surroundings are losing heat.

### Conclusion
The correct answers are B (Heat is gained by the ice-cream) and C (Heat is lost from the surroundings).

### Final Answer
**B and C are correct.**

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