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ROAD MAP:

1- Lesson overview

2- Pre-assessment

3- Investigate

4- Individual Work (Scientists)

6- Choice board

7- Post-assessment

8- Reflection

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Objectives:

Identify and describe the factors that affect the rates of chemical reactions: concentration, temperature, surface area, and catalysts.

Analyze how these factors influence reaction rates through observations and experiments.

Terminologies:

Reaction Rate

Concentration

Surface Area

Catalyst

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Which of the following best describes an endothermic reaction?

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A)   reaction that releases heat to the surroundings

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b)  reaction that absorbs heat from the surroundings.

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 c)   reaction that does not change temperature

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d)    reaction that only occurs in a gas phase.

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Question: What factors do you think influence how quickly a chemical reaction occurs?

Discussion: Share thoughts with a partner and then with the class.

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Use the simulation to answer the following questions:

https://gizmos.explorelearning.com/find-gizmos/launch-gizmo?resourceId=553

1- Which chemical increases temperature, and which chemical decreases temperature during a reaction?

2- What do the terms "endothermic" and "exothermic" mean in relation to chemical reactions?

3-How does changing the concentration of reactants affect the temperature change observed in the reaction?

4-What effect does increasing the surface area of a solid reactant have on the reaction rate, as observed in the simulation?

5-How does the addition of a catalyst impact the temperature change and speed of the reaction in the simulation?

6-What observations can you make about the energy changes in reactions when the temperature rises versus when it falls?

7-In the simulation, what patterns do you notice regarding temperature changes when different types of reactants are combined?

8-How can you determine if a reaction is endothermic or exothermic based on temperature data from the simulation?

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DESCRIPTION

Observe a chemical reaction with and without a catalyst. Determine the effects of concentration, temperature, surface area, and catalysts on reaction rates. Reactant and product concentrations through time are recorded, and the speed of the simulation can be adjusted by the user.

Full Lesson Info

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Collision Theory Gizmo | ExploreLearning Gizmos

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Observe a chemical reaction with and without a catalyst. Determine the effects of concentration, temperature, surface area, and catalysts on reacti...

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Which factor can increase the rate of a chemical reaction?
A) Decreasing the temperature
B) Increasing the concentration of reactants
C) Reducing the surface area of reactants
D) Using a catalyst that slows the reaction

Essay Question:

1. What factors influence the rate of a chemical reaction? Describe at least two factors and explain how each affects the speed of the reaction. Provide a simple example for each factor.

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Multiple-Choice Question:

1. When a catalyst is added to a reaction, what is the expected effect on the reaction rate?
A) The reaction rate decreases.
B) The reaction rate increases without being consumed in the reaction.
C) The catalyst changes the products of the reaction.
D) The reaction rate remains unchanged.

Essay Question:

1. Using the principles of collision theory, explain how concentration and temperature affect the rate of a chemical reaction. Discuss the molecular interactions that occur and how these principles apply to real-world scenarios, such as industrial chemical processes or everyday cooking.

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Multiple-Choice Question:

1. How does increasing the temperature affect the rate of a reaction?
A) It decreases the reaction rate.
B) It has no effect on the reaction rate.
C) It increases the reaction rate by giving particles more energy.
D) It only affects gaseous reactions.

Essay Question:

1. Discuss how the surface area of a reactant influences the rate of a chemical reaction. Provide an example that illustrates this relationship, and explain the molecular reasoning behind it.

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Factors that affect the rate of reaction test questions - GCSE Chemistry (Single Science) - WJEC - BBC Bitesize

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Learn about the factors that affect the rate of chemical reactions with BBC Bitesize GCSE Chemistry (WJEC).

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write below a) increase/decrease in each

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write below a) increase/decrease in each

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Quizizz: You’ve been invited to a Quizizz activity

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1. What did I learn?

2. What was the most challenging part?

3. What can I improve next time?