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Description
Flashcards by Deleted user, updated more than 1 year ago
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Created by Farha Idrees
over 6 years ago
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Copied by Farha Idrees
over 6 years ago
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| Question | Answer |
| define thermal energy | the total energy of an object due to the kinetic energy of its atoms and/or molecules depending on its mass |
| define temperature | a measure of the average kinetic energy of molecules |
| What does internal energy consist of? | 1. the kinetic energy of atoms 2. the potential energy due to the intermolecular forces |
| What is internal energy? | the total energy in the kinetic and potential energy stores of all the particles in the substance |
| increasing the temperature = | = increases the internal energy |
| The strength of the forces of attraction between the particles of a substance explain why it is a solid, liquid, or gas. Give examples | • solid; strong forces of attraction • liquid; weaker forces of attraction • gas; insignificant forces of attraction |
| When a substance is heated: | • if its temperature rises, the kinetic energy of its particles increase • if it melts or boils, the potential energy of its particles increase |
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