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CHEM chap 6-7
| Question | Answer |
|---|---|
| what represents a large number of atoms or molecules? | moles |
| what is a mole unit represented by? | 6.022x10^23 |
| what is the ability to do work? | energy |
| what is the transfer of energy due to temp differences called? | heat |
| what is the unit of heat energy called? | calorie or joule |
| what is 1 cal equal to? | 1cal=4.184J |
| what is a measure of the heat of an object? | temperature |
| what is the temp at which a solid turns into a liquid? | melting point |
| what is the temp at which a substance turns from liquid to gas? | boiling point |
| what is it called when substances lose energy to the surrounding environment? | exothermic |
| what is it called when reactants must absorb energy from their environment to react? | endothermic |
| how many kcal/g of energy are in a carbohydrate? | 4 kcal/g of energy |
| how many kcal/g of energy are in proteins? | 4 kcal/g of energy |
| how many kcal/g of energy are in fats and oils? | 9 kcal/g of energy |
Created by:
Riley06
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