1. Unit 1: Reaction Kinetics
Lesson 1: Introduction

2. Let’s Begin with a Question...
Endothermic reactions absorb heat energy – they require energy input in order to proceed.
Exothermic reactions, on the other hand, release heat energy.
Burning a match is an exothermic reaction, so why don’t matches spontaneously combust?
This and many other questions can be answered by the power of reaction kinetics!

3. Calculating Reaction Rates
Example: If 16 g of HCl are used up after 12 min in a certain reaction, then what is the average reaction rate?

4. Your turn: If a reaction between CaCO3 and HCl produces 245 mL of CO2 in 17 s, what is the average reaction rate?
Hone your skills:
Pg. 2 #1-5.
15 min

5. Brain Break!

6. Measuring Reaction Rates: A Demo
Time (s)
Mass (g) 10 20 30 40 50 60 70 80
Demo 12.I.1

7. Mass (g)
Time (s)

8. Methods of Measuring Reaction Rates
Consider the following unbalanced exothermic reaction: Cu(s) + HNO3(aq) → Cu(NO3)2(aq) + H2O(l) + NO2(g) red colourless blue brown Think-Pair-Share: What are four possible ways you could measure reaction rate?
TPS on 4 ways to measure rate (mass, colour intensity, temp, and pressure)

9. Homework:
Pg. 2 #1-5 (if not already finished) and pg. 5 #8-9.