1. What is the name and symbol of the unit of energy used in science?
Question 1
What is the name and symbol of the unit of energy used in science?
joule, J

2. Is energy supplied or released when bonds break?
Question 2
Is energy supplied or released when bonds break?
Supplied

3. Are all bond energies the same?
Question 3
Are all bond energies the same? No

4. Question 4
Does this energy level diagram show an exothermic or an endothermic reaction?
Exothermic reaction

5. How many joules are there in one calorie?
Question 5
How many joules are there in one calorie?
4.2

6. What could happen if someone eats more food than they need?
Question 6
What could happen if someone eats more food than they need?
They can become obese

7. Is energy supplied or released when bonds are made?
Question 7
Is energy supplied or released when bonds are made?
Released

8. Question 8
What do we call the minimum amount of energy needed for a reaction to start?
Activation energy

9. Question 9
Does this energy level diagram show an exothermic or an endothermic reaction?
Endothermic

10. Question 10
The reaction below is exothermic. Which involves the most energy, bond breaking or bond making?
Bond making