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nucleus. Draw Bromine Electron Shell Configuration: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 5. 7. 35. 18. 8. 35. 2. electron. Chemistry Joke. Why did the second man die?. Your goals. You shouls be able to : Identify ways to change the speed of a chemical reaction (Level 1-2)
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nucleus Draw Bromine Electron ShellConfiguration:1s22s22p63s23p63d104s24p5 7 35 18 8 35 2 electron
Chemistry Joke Why did the second man die?
Your goals • You shouls be able to: • Identify ways to change the speed of a chemical reaction (Level 1-2) • Describe the ways to change the speed of a chemical reaction (Level 3-4) • Describe the different techniques and explain how they change the speed of a chemical reaction (Level 5-6)
Vocabulary • energy concentration • temperaturepressure • catalyst inhibitor • collision theory enzyme • pulverize
Chemical Reaction & change • What causes a chemical reaction to occur? • How do you know a chemical change has occurred?
Reaction rates – changing the speed of the reaction Collision theory – the more molecules collide together, the faster the reaction occurs HOW?
How you can change the speed of a reaction - Change the: • Temperature • Surface area • Concentration • Add a catalyst http://www.media.pearson.com.au/schools/cw/au_sch_rickard_sd4_1/int/reactions.html