Question

1. Is energy absorbed or released when chemical bonds are broken during a chemical reaction?

2. Is energy absorbed or released when chemical bonds are formed during a chemical reaction?

3. What are some real life examples of an exothermic reaction?

4. What are some real life examples of a endothermic reaction?

5. Compare and contrast Endothermic vs. a Exothermic reaction

6. Analyze the folloiwng scenario:
In chemistry class after adding two chemical substances in a test tube ( which is the system) you noticed when you touch the tube that it begin to get very cold. What type of chemical reaction is this? Endothermic or Exothermic ... Use the scenario to explain your response.

7. Define ΔH Enthalpy

8. Compare and Contrast a positive ΔH(Enthalpy) to a negative ΔH( Enthalpy)

9. Explain the relationship between Enthalpy and a Exothermic reaction, and a Endothermic reaction

10. Explain how the Potential Energy curve's of a Endothermic different from a Exothermic reaction

Answer 1

1. Absorbed
2. Released
3. Boiling salt water (search this to make sure )
4. Making a sandwich
5. Decomposition= endothermic reaction and Syntheses= exothermic reaction (DEN SEX)
6. Endothermic (heat is absorbed so the tube feels cold= decomposition reaction)
( I’m going to do more research on 7-10 so I don’t provide the wrong answers)