Chemistry: The fun science
Rate of Reactions
What are the factors that affects rate of reactions?
Previously...
You've learnt about many types of reactions so far... but what affects the rate of reactions?
Let's Explore!
Watch the YouTube video below and note down the five factors affecting rate of reaction!
1. Concentration
1. Concentration
How do you think concentration affects the rate of reaction? Watch the following video to find out more!
Questions:
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What is the equation of the reaction?
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What is the independent variable?
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What is the dependent variable?
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What can we conclude from the experiment?
How do you think concentration affects the rate of reaction? Watch the following video to find out more!
Questions:
-
What is the equation of the reaction?
-
What is the independent variable?
-
What is the dependent variable?
-
What can we conclude from the experiment?
How do you think concentration affects the rate of reaction? Watch the following video to find out more!
Questions:
-
What is the equation of the reaction?
-
What is the independent variable?
-
What is the dependent variable?
-
What can we conclude from the experiment?
2. Surface area to volume ratio
How would changing the surface area affect the rate of reaction? Watch the following video to find out more!
Questions:
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What are the two ways in which he tried to burn the milk powder?
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Which method gives a faster rate of reaction? Why?
3. Temperature
3. Temperature
How do you think temperature affects the rate of reaction? Watch the following video to find out more!
Questions:
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What did he add to the water?
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Can you write an equation to represent what has happened?
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Explain why temperature would affect rate of reaction based on the collision theory
4. Pressure (for gases)
How do you think pressure would affect the rate of reaction? Think about cooking rice with a pressure cooker and using a pot
Questions:
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How does a pressure cooker work?
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In which container would the rice cook faster? Why?
5. Catalyst
How does a catalyst work to increase rate of reaction?
Questions:
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What is the equation for the decomposition of hydrogen peroxide?
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What was placed into each measuring cylinder?
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Why was there foam coming out?
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Which is the most effective catalyst?
