Printable Worksheet

Heat and phase in the kitchen

Use this sheet after the Heat and Phase lesson. It is designed for short written answers, discussion, and observation-based reasoning.

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Heat lab illustration

Part A: Quick concepts

1. In one sentence, explain the difference between temperature and heat.

2. Why can steam turn back into droplets on a cool lid?

3. Why is the back of a refrigerator warm?

Part B: Kitchen observations

Choose one of these and explain it using conduction, convection, or radiation:

— a metal spoon in hot soup

— steam rising from a pot

— bread browning in a toaster

Part C: Challenge

How can a thermos help both a hot drink and a cold drink? Write your answer without using the phrase "it keeps temperature in."

Part D: With numbers

4. A kettle holds g of water at °C. How much energy (in kJ) is needed to bring it to 100 °C? (cwater = 4.18 J/g·°C)

5. You drop g of ice at 0 °C into a drink. How much energy does just melting it absorb? (Lfusion = 334 J/g)

Return Home, pair this worksheet with Teach, the Heat and Phase lesson, and the Teacher Guide.