Question

Endothermic reactions absorb a lot of energy. Exothermic reactions give off a lot of energy. Which type of reaction has a higher activation energy? Which one takes more energy to break up the bonds of the reactants?1.Exothermic reactions have a higher activation energy. Exothermic reactions require more energy to break up the bonds of the reactants.2.Exothermic reactions have a higher activation energy. Endothermic reactions require more energy to break up the bonds of the reactants.3.Endothermic reactions have a higher activation energy. Exothermic reactions require more energy to break up the bonds of the reactants.4.Endothermic reactions have a higher activation energy. Endothermic reactions require more energy to break up the bonds of the reactants.

Answer 1

Chemistry B Semester Exam 5/4/2023

1. Cs-Br

2. K-C is ionic, and C-O is polar covalent

3. All molecules are in constant motion, so they all have some kinetic energy.

4. The reaction between substances A and B has a lower activation energy than the reaction between substances B and C.

5. More bond energy is absorbed on the reactants side than is released on the products side.

6. an exothermic reaction

7. Endothermic reactions have a higher activation energy. Endothermic reactions require more energy to break up the bonds of the reactants.

8. Heat must be released by the products in order to convert from the reactants.

9. Cooling a purple solution will turn it pink.

10. Both are flexible, but one conducts electricity while the other insulates.

11. high pressure, high-temperature water extraction

12. steel + vanadium for shock absorption

13. 15

14. the number of atoms, type of elements, and mass of reactants and products are equal.

15. 64 grams

16. 1.503x10^23

17. The relative numbers of protons and neutrons can differ before and after the change, but the total number of those particles remains the same.

18. The plastic balls are a good representation of neutrons, but there is no splitting of nuclei as happens in fission.

19. beta minus decay

20. alpha decay

21. Greenhouse gases have more than two atoms, allowing them to vibrate and release radiation, warming the atmosphere.

22. cause: acid rain, consequence: destruction of crops

23. toxic bacteria in the water supply

24. it reaches hard to get to oil and gas deposits.

Answer 2

Step-by-step explanation:

In endothermic reactions, which are those that absorb energy, the activation energy is higher than in exothermic reactions, which are those that release energy. Also, Endothermic reactions require more energy to break up the bonds of the reactants.

Answer: 4.Endothermic reactions have a higher activation energy. Endothermic reactions require more energy to break up the bonds of the reactants.