level: Specific Latent Heat
Questions and Answers List
level questions: Specific Latent Heat
| Question | Answer |
|---|---|
| What happens to a substance’s temperature as it changes state? | It stays constant. |
| What happens to energy supplied or released when a substance is changing state. | It goes into either separating the particles or bringing them closer together. |
| What is specific latent heat? | The energy required to change 1kg of a substance from solid⇾liquid at melting point, or liquid⇾gas at boiling point. |
| Does it take more energy to change a substance from liquid to gas or solid to liquid? | Liquid to gas. |
| What is the specific latent heat of fusion? | The energy required to change 1kg of a substance from a solid to liquid at the melting point. |
| What is the specific latent heat of vaporisation? | The energy required to change 1kg of a substance from liquid to gas at the boiling point. |
| What is the equation for specific latent heat? | Eh=ml |
| In the equation “Eh=ml” what does l stand for? | Specific latent heat. |
| What is specific latent heat measured in? | Jkg-1 |