Based on the clues provided in your description, here are the corresponding terms:
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The ability of an atom to possess electrons in a bond: Electronegativity
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The measure of the average kinetic energy of particles in a system: Temperature
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Warm fluid rises, cold fluid sinks: Convection
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This could be reduced by using a wooden spoon instead of a metal spoon when cooking: Conduction
So the answers matched to the descriptions are:
- Electronegativity
- Temperature
- Convection
- Conduction