Answer all the questions below then hit the check answer button and scroll down to get your score.
1. What does an energy level diagram show?
2. In a chemical reaction the reacting chemicals are known as the:
3. An exothermic reaction will release energy to the surroundings.
4. What is bond energy or bond enthalpy?
5. Breaking covalent bonds in a molecule is an process and will require an input of energy.
6. Bond formation is what type of process?
7. In an exothermic reaction how does the energy released by bond formation in the products compare to the energy required for bond breaking in the reactants?
8. Which of the following is true for all chemical reactions; both exothermic and endothermic reactions?
9. Before a chemical reaction can start the bonds holding the reactant molecules together must be ; this process will require an input of energy.
10. The energy needed to break the bonds in the reactant molecules and start the reaction is called the energy.
11. What is the overall energy change of a reaction called?
