logging in or signing up Rates of Reaction dantescience Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Copy Does not support media & animations WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 998 Category: Education License: All Rights Reserved Like it (3) Dislike it (0) Added: January 15, 2010 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: nadiamadzan (37 month(s) ago) the video in slide 26 can't be viewed is it? anyways great pppt Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Rates of Reaction : Rates of Reaction 1 M.BREGAR (DANTE C.S.S.) Reaction Rate : Reaction Rate The reaction rate is the speed of at which a reaction takes place. It is “how quickly” a product is made in a chemical reaction Example Mg + Cl2 MgCl2 REACTANTS PRODUCTS 2 M.BREGAR (DANTE C.S.S.) DEMO: Rate of Reaction : DEMO: Rate of Reaction 3 M.BREGAR (DANTE C.S.S.) COLLISION THEORY : COLLISION THEORY 4 M.BREGAR (DANTE C.S.S.) Collision Theory : Collision Theory Reactions take place when reactants bump to make products 5 M.BREGAR (DANTE C.S.S.) Slide 6: 6 M.BREGAR (DANTE C.S.S.) Reaction Rate : Reaction Rate Mg + Cl2 MgCl2 7 M.BREGAR (DANTE C.S.S.) Collision Theory : Collision Theory Reaction Rate: is how quickly you create a new substance in a chemical reaction Faster reactions, have more collisions Slower reactions, have less collisions 8 M.BREGAR (DANTE C.S.S.) Collision Theory : Collision Theory “Reaction Rate” can be changed by: Temperature Changing the concentration (number of molecules) Size of molecules / Changing the surface area 9 M.BREGAR (DANTE C.S.S.) Factors Controlling Reaction Rate : Factors Controlling Reaction Rate 10 M.BREGAR (DANTE C.S.S.) (1) Changing Temperature : (1) Changing Temperature Increasing temperature increases speed of molecules 11 M.BREGAR (DANTE C.S.S.) (1) Changing Temperature : (1) Changing Temperature 12 M.BREGAR (DANTE C.S.S.) (1) Changing Temperature : (1) Changing Temperature Increased temperature = faster chemical reaction, because there are MORE COLLISIONS 13 M.BREGAR (DANTE C.S.S.) (1) Changing Temperature : (1) Changing Temperature 14 M.BREGAR (DANTE C.S.S.) (2) Changing Surface Area : (2) Changing Surface Area Increasing “surface area” of molecules increases number of collisions . More collisions means “rate of reaction” is faster 15 M.BREGAR (DANTE C.S.S.) (2) Changing Surface Area : (2) Changing Surface Area Perimeter of the large chip is 12 units Perimeter of small chips is 4, but there 9 small chips for total perimeter of 36 (9 x 4) 16 M.BREGAR (DANTE C.S.S.) (2) Changing Surface Area : (2) Changing Surface Area MAGENSIUM POWDER MAGENSIUM RIBBON 17 M.BREGAR (DANTE C.S.S.) (2) Changing Surface Area : (2) Changing Surface Area 18 M.BREGAR (DANTE C.S.S.) (2) Changing Surface Area : (2) Changing Surface Area 19 M.BREGAR (DANTE C.S.S.) (3) Changing Concentration : (3) Changing Concentration What is concentration? The amount of particles in a liquid . Example – a strong acid would contain more acid particles than a weak acid. STRONG ACID WEAK ACID 20 M.BREGAR (DANTE C.S.S.) (3) Changing Concentration : (3) Changing Concentration 21 M.BREGAR (DANTE C.S.S.) (3) Changing Concentration : (3) Changing Concentration Increasing the concentration, increases reaction rate. Why? Increase in concentration = more molecules This results in more collisions between molecules and an increase in reaction rate. 22 M.BREGAR (DANTE C.S.S.) (3) Changing Concentration : (3) Changing Concentration 23 M.BREGAR (DANTE C.S.S.) Catalysts : Catalysts 24 M.BREGAR (DANTE C.S.S.) Catalysts : Catalysts These are “special molecules” which increase the reaction rate of a chemical reaction. Key: the catalysts are not used up in the reaction, but are actually reused. 25 M.BREGAR (DANTE C.S.S.) Catalysts : Catalysts 26 M.BREGAR (DANTE C.S.S.) You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Rates of Reaction dantescience Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Copy Does not support media & animations WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 998 Category: Education License: All Rights Reserved Like it (3) Dislike it (0) Added: January 15, 2010 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: nadiamadzan (37 month(s) ago) the video in slide 26 can't be viewed is it? anyways great pppt Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Rates of Reaction : Rates of Reaction 1 M.BREGAR (DANTE C.S.S.) Reaction Rate : Reaction Rate The reaction rate is the speed of at which a reaction takes place. It is “how quickly” a product is made in a chemical reaction Example Mg + Cl2 MgCl2 REACTANTS PRODUCTS 2 M.BREGAR (DANTE C.S.S.) DEMO: Rate of Reaction : DEMO: Rate of Reaction 3 M.BREGAR (DANTE C.S.S.) COLLISION THEORY : COLLISION THEORY 4 M.BREGAR (DANTE C.S.S.) Collision Theory : Collision Theory Reactions take place when reactants bump to make products 5 M.BREGAR (DANTE C.S.S.) Slide 6: 6 M.BREGAR (DANTE C.S.S.) Reaction Rate : Reaction Rate Mg + Cl2 MgCl2 7 M.BREGAR (DANTE C.S.S.) Collision Theory : Collision Theory Reaction Rate: is how quickly you create a new substance in a chemical reaction Faster reactions, have more collisions Slower reactions, have less collisions 8 M.BREGAR (DANTE C.S.S.) Collision Theory : Collision Theory “Reaction Rate” can be changed by: Temperature Changing the concentration (number of molecules) Size of molecules / Changing the surface area 9 M.BREGAR (DANTE C.S.S.) Factors Controlling Reaction Rate : Factors Controlling Reaction Rate 10 M.BREGAR (DANTE C.S.S.) (1) Changing Temperature : (1) Changing Temperature Increasing temperature increases speed of molecules 11 M.BREGAR (DANTE C.S.S.) (1) Changing Temperature : (1) Changing Temperature 12 M.BREGAR (DANTE C.S.S.) (1) Changing Temperature : (1) Changing Temperature Increased temperature = faster chemical reaction, because there are MORE COLLISIONS 13 M.BREGAR (DANTE C.S.S.) (1) Changing Temperature : (1) Changing Temperature 14 M.BREGAR (DANTE C.S.S.) (2) Changing Surface Area : (2) Changing Surface Area Increasing “surface area” of molecules increases number of collisions . More collisions means “rate of reaction” is faster 15 M.BREGAR (DANTE C.S.S.) (2) Changing Surface Area : (2) Changing Surface Area Perimeter of the large chip is 12 units Perimeter of small chips is 4, but there 9 small chips for total perimeter of 36 (9 x 4) 16 M.BREGAR (DANTE C.S.S.) (2) Changing Surface Area : (2) Changing Surface Area MAGENSIUM POWDER MAGENSIUM RIBBON 17 M.BREGAR (DANTE C.S.S.) (2) Changing Surface Area : (2) Changing Surface Area 18 M.BREGAR (DANTE C.S.S.) (2) Changing Surface Area : (2) Changing Surface Area 19 M.BREGAR (DANTE C.S.S.) (3) Changing Concentration : (3) Changing Concentration What is concentration? The amount of particles in a liquid . Example – a strong acid would contain more acid particles than a weak acid. STRONG ACID WEAK ACID 20 M.BREGAR (DANTE C.S.S.) (3) Changing Concentration : (3) Changing Concentration 21 M.BREGAR (DANTE C.S.S.) (3) Changing Concentration : (3) Changing Concentration Increasing the concentration, increases reaction rate. Why? Increase in concentration = more molecules This results in more collisions between molecules and an increase in reaction rate. 22 M.BREGAR (DANTE C.S.S.) (3) Changing Concentration : (3) Changing Concentration 23 M.BREGAR (DANTE C.S.S.) Catalysts : Catalysts 24 M.BREGAR (DANTE C.S.S.) Catalysts : Catalysts These are “special molecules” which increase the reaction rate of a chemical reaction. Key: the catalysts are not used up in the reaction, but are actually reused. 25 M.BREGAR (DANTE C.S.S.) Catalysts : Catalysts 26 M.BREGAR (DANTE C.S.S.)