1) Enthalpy
1) Enthalpy
- Created by: Hannah
- Created on: 18-02-13 11:00
Other questions in this quiz
2. Define the law of conservation of energy
- energy cannot be created or destroyed
- energy can be created or destroyed
- energy can sometimes be created or destroyed
3. What does not happen in and exothermic reaction?
- ΔH has a negative sign because heat has been lost by the chemical system
- the enthalpy change of the products is greater than the enthalpy change of the reactants
- there is a heat loss from the chemical system to the surroundings
- the enthalpy of the products is smaller than the enthalpy of the reactants
4. What does not happen in an endothermic reaction
- ΔH has a positive sign becaue the heat has been gained by the chemical system
- the enthalpy of the products is greater than the enthalpy of the reactants
- there is a heat gain to the chemical system from the surroundings
5. What is an example of an exothermic reaction?
- self-heating cans
- self-cooling cans
- self destructing cans
Comments
No comments have yet been made