Energy Changes Flashcards
1
Q
Activation energy is…
A
the minimum amount of energy the reactant particles require in order to collide with each other and react.
2
Q
On reaction profile diagrams, the activation energy is always…
A
the increase in energy from the reactants to the peak of curve.
3
Q
During a chemical reaction, three things happen:
A
- The bonds of the reactant molecules are broken
- The atoms rearrange themselves
- The bonds of the product molecules are formed
4
Q
The term ‘bond energy’ refers to…
A
the amount of energy required to break one mole of a particular covalent bond.
5
Q
Bond energy values are always:
A
Positive
6
Q
Calculate the overall energy change of a reaction
A
(energy of) bonds broken - (energy of) bonds formed
