Plan for Today Introductions weebly New Unit: Chemical Reactivity

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Presentation transcript:

Plan for Today Introductions weebly New Unit: Chemical Reactivity Rates of Reactions

Introductions Please make a name tag with: bleckinger.weebly.com Your name Draw something you are good at or enjoy bleckinger.weebly.com Physics 2.6 Electricity and electromagnetism

AS2.6 Chemical Reactivity Rates of Reaction Equilibrium Acids and Bases

Collision Theory Molecules need to collide with enough energy AND in the correct orientation in order for a reaction to occur

Rates of Reaction Factors that affect the Rate of Reaction Temperature Concentration Catalyst Surface Area How do each of these relate to Collision Theory?

Tomorrows Experiment Hydrochloric acid reacts with sodium thiosulfate to produce a cloudy white precipitate. You and a partner will be investigating the effect of either temperature or concentration on reaction rate. Key focus will be on data collection and presentation (data table and graph to show trend).

Instructions for Lab Concentration Temperature You will be given 0.2M Na2S2O3 and 2M HCl Reduce the concentration of one reactant to get at least 5 data points. Ex: 0.2, 0.16, 0.12... Temperature You will be given 0.05M Na2S2O3 and 2M HCl Use a water bath to increase the temperature incrementally to get at least 5 data points Ex: 30, 40, 50...

Example Table Concentration of reactant X (or) Temp of reactants Variable 1 Var 2 Var 3 Var 4 Var 5 Trial 1 Trial 2 Trial 3 Average time in Seconds When you are finished testing, plot your results on a graph with time on the X axis Be prepared to share your results

Daily Warm Up Define/explain Collision Theory in your own words

Daily Warm Up List four factors that can effect the rate of a chemical reaction Pick one factor and use collision theory to explain how that factor effects the rate of reaction