The heat given to or given up by a substance...

Question 1 of 270705eccef9ebacbc34ba4d4656b

The heat given to or given up by a substance in changing state is called __________.

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Question 1 of 27070

Q

The heat given to or given up by a substance in changing state is called __________.

🔍 Key Concepts

• change of state in thermodynamics (solid ↔ liquid ↔ gas) • difference between a process (like boiling or condensing) and the heat associated with that process • idea that temperature can stay the same while heat is still being added or removed

💭 Think About

• Ask yourself: which option is the name of the heat energy involved, rather than the name of the physical process? • Think about melting ice at 0°C or boiling water at 100°C: what is the heat called that causes the change of state without changing temperature? • Look at each choice and decide: is this describing a phase change event or the heat required for that phase change?

✅ Before You Answer

• Identify which choices name a phase change process (e.g., liquid to gas, gas to liquid) and set them aside. • Confirm which term is used in basic thermodynamics to mean heat absorbed or released during a phase change at constant temperature. • Make sure your final choice refers to heat energy itself, not the visible action of changing from liquid, solid, or gas.