2.4 – Chemical Reactions

Question 0

Bonds_And_during chemical reactions

Answer 0

Break and form

Question 1

Life depends on _reactions

Answer 1

Chemical

Question 2

_Change substances into different ones were breaking and forming chemical bonds

Answer 2

Chemical reactions

Question 3

_Are change during a chemical reaction

Answer 3

reactan

Question 4

_Are made by a chemical reaction

Answer 4

Products

Question 5

_ the amount of energy that breaks the bond

Answer 5

Bond energy

Question 6

Energy is_to break bonds and energy is released when bonds form

Answer 6

added

Question 7

A reaction is that_went reactants and products form at the same rate

Answer 7

equilibrium

Question 8

Chemical reactions release or_energy

Answer 8

absorb

Question 9

_Energy is the amount of energy that needs to be absorbed to start a chemical reaction

Answer 9

activation energy

Question 10

_Reactions release more energy than the absorb. Reactions have higher bond energies and products. Excess energy is_by the reaction

Answer 10

1. exothermic

2. released

Question 11

_Reactions absorb more energy than the release. Reactants have lower bond energy than products. Energy is_by the reaction to make up the difference.

Answer 11

1. endothermic

2. absorbed