Chemistry.... Real Life Stuff !! Why Learn About Chemistry? fascinating! - we use it everyday! - empower ourselves as consumers p. S.Innesc. Ms. Jamieson
Chemistry Big Ideas • 1) Prediction. Can you predict how chemicals behave and react together? • 2) Communication. Be the scientist. Can you describe to someone about chemicals and their reactions? • 3) Application. Risks and Benefits. How do chemical reactions impact humans and our environment, both positively and negatively?
Acid Rain – Which Big Idea? photo courtesy: weatherwizkids.com Photo courtesy: acidrain2004.tripod.com
Health – seriously Big Idea! What happens when we don’t get the Big Idea.
Is there a problem here? HOW SWEET IT ISThe relative potency of sugar compared with artificial sweeteners. sugar 1x cyclamate 45x aspartame 180x saccharin 300x sucralose 600x neotame13,000x Discover Magazine: August 2005, The Chemistry of Artificial Sweeteners When the sweetener aspartame is digested, its methyl ester bond is broken down into methanol, which further degrades into formaldehyde. Both methanol and formaldehyde are toxic in high doses, but a person would have to drink 600 cans of diet soda to get as much of either substance as is contained in a single orange. Discover Magazine, August 2005
Big Idea Stuff to Help.... • 1) Cheat Sheet Notes – Success Notes • 2) SNC2P Website – www.ugdsb.on.ca/odss/science • 3) Big Idea Brainstorm - consolidate