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Unit 4 : The Chemistry of Life

Unit 4 : The Chemistry of Life

Unit 4 : The Chemistry of Life. Particles. Even though organisms exist in many different forms they are all made up of the same thing: elements . An element is a substance that cannot be broken down into simpler substances. You can find a listing of the elements on the periodic table.

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583 views • 49 slides
Chemical Kinetics

Chemical Kinetics

Chemical Kinetics. Learning Outcomes. recall earlier work on the states of matter and simple collision theory be able to apply the ideal gas equation and the molar volume to reactions

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Chapter 8, Sections 4 and 5

Chapter 8, Sections 4 and 5

Chapter 8, Sections 4 and 5. Andrew Pidhorodeckyj Annie Sell. 8.4: Enzymes speed up metabolic reactions by lowering energy barriers. Enzymes are biological catalysts Catalysts are agents that speed the rate of a reaction but are unchanged by the reaction. The Activation Energy Barrier.

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Collision Model

Collision Model

Collision Model. Goal: develop a model that explains why rates of reactions increase as concentration and temperature increases. The collision model: in order for molecules to react they must collide. The greater the number of collisions the faster the rate.

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Reaction Rates

Reaction Rates

Reaction Rates. Chapter 19-1. 19.1. Collision Theory. In chemistry, the rate of chemical change, or the reaction rate, is usually expressed as the amount of reactant changing per unit time. 19.1. Collision Theory.

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Activation Energy and Catalyst

Activation Energy and Catalyst

Activation Energy and Catalyst. Temperature and Rate. Generally, as temperature increases, so does the reaction rate. This is because k is temperature dependent. The Collision Model. In a chemical reaction, bonds are broken and new bonds are formed.

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232 views • 16 slides
Rates of Reaction

Rates of Reaction

Rates of Reaction. Unit 8. Reaction Times. Time of reaction varies Examples: HCl + NaOH ? NaCl + H 2 O Instantaneous 2 CO + O 2 ? 2CO 2 Thousands of Years It is therefore important to not only know if a reaction will occur, but also what the reaction rate is.

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