1. Collision theory and rates of reaction
April 10, 2018
Collision theory and rates of reaction
Kinetics
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

2. Do Now (4 min)
April 10, 2018
Learning target: I can explain how reactions occur and the factors to speed up a reaction Do Now: (Answer on your Do Now Sheet) Describe something that happens really fast Describe something that happens really slowly
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

3. REVIEW: Do Now (4 min)
April 10, 2018
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

4. Announcement
April 10, 2018
Tutoring this Thursday: 3 – 4:30 PM *Check to make sure you have all of your labs in!!!!
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

5. Kinetics: the study of the rate (or speed) of a reaction
April 10, 2018
Kinetics: the study of the rate (or speed) of a reaction
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

6. Part A: Speed of reactions
April 10, 2018
In PAIRS: - Discuss and write down some fast reactions and some slow reactions
Fast
Slow
Explosions
Rust
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

7. Part A: Speed of reactions
April 10, 2018
Rate of a reaction: the speed (rate) of how fast a reaction proceeds (happens). Can be measured in concentration / sec
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

8. Part B: Collision theory
April 10, 2018
In PAIRS: Discuss and write down What would cause a reaction to occur? *think about what needs to happen in order for a reaction to even start*
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

9. Part B: Collision theory
April 10, 2018
For a reaction to occur: 1. They need to collide!
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

10. Part B: Collision theory
April 10, 2018
For a reaction to occur:
They need to collide!
They need to collide with enough energy
*think about billiard balls
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

11. Part B: Collision theory
April 10, 2018
For a reaction to occur:
They need to collide!
They need to collide with enough energy
They need to collide with the proper orientation
*Think about high-fives!
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

12. Read me
April 10, 2018
Take 2 minutes to read and annotate INDEPENDENTLY (on your page):
We know that positives and negatives go together, and that CaCl2 will be a product, so the Cl and Ca must collide, or no reaction will occur. Not only that, but they must collide with enough energy, just like if two cars collide they won’t be damaged unless they’re going fast enough.
There is a minimum amount of energy which colliding particles need in order to react with each other. If the colliding particles have less than this minimum energy then they just bounce off each other and no reaction occurs. This minimum energy is called the activation energy.
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

13. Part C: How to speed up a reaction
April 10, 2018
In Pairs: Discuss and write down your brainstorm How can we make a reaction go faster??
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

14. Factors affecting rate of reaction
April 10, 2018
There are 6 ways we can change the rate (or speed) of a reaction!
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

15. Factors affecting rate of reaction
April 10, 2018
Temperature
How does the temperature increase impact the speed of molecules?
B. What’s another way of saying speed that we know?
C. If molecules move faster, how would that impact the probability (or possibility) of collisions?
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

16. Factors affecting rate of reaction
April 10, 2018
Temperature Temp  KE  collisions  rate of reaction
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

17. Factors affecting rate of reaction
April 10, 2018
Concentration
What happens to the rate of reaction if we increase the concentration of our reactants?
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

18. Factors affecting rate of reaction
April 10, 2018
Concentration concentration  collisions  rate of reaction
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

19. Factors affecting rate of reaction
April 10, 2018
Pressure (in gases)
1. What is the relationship between volume and pressure?
2. If you have the same number of gas particles in a smaller volume, what happens to the concentration?
Increasing the pressure of a reaction where the reactant is a gas is similar to increasing the concentration of a reactant in a solution. The gas particles will be closer together when the pressure increases. This means that the particles collide more frequently with each other and the rate of the reaction increases.
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

20. Factors affecting rate of reaction
April 10, 2018
Pressure P  V  concentration  collisions  rate of reaction
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

21. Factors affecting rate of reaction
April 10, 2018
BRAINSTORM
Surface Area
What if you take a tablet and crush it up. Will the reaction be faster for the tablet or the crushed tablet? Why?
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

22. Factors affecting rate of reaction
April 10, 2018
Surface Area surface area  interaction between particles  collisions  rate of reaction
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

23. Factors affecting rate of reaction
April 10, 2018
Catalyst
Definition: A catalyst is a substance that increases the rate of a chemical reaction without getting used up in the reaction.
A catalyst can increase the rate of a reaction by offering a different pathway with lower activation energy for the reactants to become products. A catalyst that’s in your body is called an enzyme.
An example: if your body were to convert food to energy without an enzyme, it would take 3 weeks per bagel! The enzymes in your stomach bring that down to mere hours!
Make your own example:
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

24. Factors affecting rate of reaction
April 10, 2018
Nature of the Reactants
Read the excerpt independently and complete the questions
1. If we want a reaction to happen as fast as possible we need as many collisions between the reactants as possible – which state of matter would be best for this? Why?
2. We don’t typically work with gases though since they’re hard to contain, so which state of matter is the next best? Why?
3. So we would rather work with liquids than solids for obvious reasons, but what about ionic vs. covalent? Any ideas?
4. For each option of possible reactants, which two would react with each other the fastest.
1) NaCl (s), C6H12O6 (aq), ZnO (l), LiBr (aq) 2) HCl (l), MgO (aq), BaO (s), SiC (aq)
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

25. Due Friday, April 20 Homework
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names

26. What are the three necessities for a reaction to occur?
April 10, 2018
Exit ticket (3 min)
EXIT TICKET: Complete on a separate sheet of paper
What are the three necessities for a reaction to occur?
Learning Target: I can draw organic compounds from formulas and determine the formula of organic compounds from the names