Subjects
| Sections | |||
|---|---|---|---|
| Internal Energy | 22 mins | 0 completed | Learn |
| Calorimetry | 39 mins | 0 completed | Learn |
| Thermochemical Equation | 6 mins | 0 completed | Learn Summary |
| Hess's Law | 17 mins | 0 completed | Learn |
| Enthalpy of Formation | 13 mins | 0 completed | Learn Summary |
| End of Chapter 6 Problems | 52 mins | 0 completed | Learn |
| Additional Practice |
|---|
| Units of Energy |
| Endothermic & Exothermic Reactions |
| Additional Guides |
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| Enthalpy |
Identify each process as endothermic or exothermic and indicate the sign of ΔH.
(a) an ice cube melting
(b) nail polish remover quickly evaporating after it is accidentally spilled on the skin
(c) gasoline burning within the cylinder of an automobile engine
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