Name:
Date:
Period:
UNIT 5: REACTION ENERGY
1) What is Enthalpy (definition) and how is it expressed?
2) What is an Exothermic Reaction?
3) What is an Endothermic Reaction?
4) For the following determine whether the graph(s) are Endothermic or Exothermic. Use C.E.R.
to support your answer.
a)
b)
Claim:
Evidence:
Claim:
Evidence:
Reasoning:
Reasoning:
5) What is the formula for Hess’s Law?
6) For the following determine whether Reaction Rate Increases or Decreases for these
relationships. (Do not circle a letter, answer each with either Increase or Decreases)
a) Increase in Concentration
Reaction Rate:
b) Decrease in Concentration
Reaction Rate:
c) Temperature Decrease
Reaction Rate:
d) Temperature Increase
Reaction Rate:
e) Bigger Surface Area
Reaction Rate:
f) Smaller Surface Area
Reaction Rate:
7) What is one way to Increase Activation Energy and what is the definition of it?
8) What is one way to Decrease Activation Energy and what is the definition of it?
9) Based on the graphs, determine whether a Zero, First, or Second Order Rate Law.
a)
b)
c)
Answer:
Answer:
Answer:
10) Based on the tables, determine whether a Zero, First, or Second Order Rate Law.
a)
b)
c)
Answer:
Answer:
Answer: