The heat required to change a substance from...

Question 1 / 205eccef9fbacbc34ba4d46bf6

Question 1 of 205eccef9fbacbc34ba4d46bf6

The heat required to change a substance from a liquid to a gas without experiencing a temperature change, is defined as the latent heat of __________.

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Question 1 of 20

5eccef9fbacbc34ba4d46bf6

The heat required to change a substance from a liquid to a gas without experiencing a temperature change, is defined as the latent heat of __________.

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🔍 Key Concepts

• Phase changes between liquid and gas • Meaning of latent heat (heat added with no temperature change) • Differences among fusion, vaporization, sublimation, condensation

💭 Think About

• Which term is used when a liquid becomes a gas at its boiling point, while the temperature stays constant during the change? • Which term describes melting (solid to liquid), and which one describes solid directly to gas? • When a gas turns back into a liquid, what is that process called, and is it the same direction as in the question?

✅ Before You Answer

• Make sure the process in the definition goes from liquid to gas, not the other way around • Confirm that latent heat refers to energy used to change phase, not to raise temperature • Match each option with its correct phase change direction (solid↔liquid, liquid↔gas, solid↔gas)

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Question 1 of 20

The heat required to change a substance from a liquid to a gas without experiencing a temperature change, is defined as the latent heat of __________.

fusion

vaporization

sublimation

condensation

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