When did the reaction at lower concentration stop?
40 seconds
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5
Which reaction, A or B, finishes first? How can you tell?
A because the line levels off in the shortest amount of time
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5
To slow down a chemical reaction you will do one of the following: Place the reactants in hot water. Place the products in ice bath. Place the reactants in a ice bath. Keep stirring the reactants with a stirring rod.
Place the reactants in a ice bath
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5
What is the rate of reaction?
How fast a reaction is in a certain time
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5
What is the relationship between surface area and the particle size? Directly proportional. Inversely proportional.
Inversely proportional
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What is the relationship between concentration of acid to rate of reaction? Directly proportional. Inversely proportional.
Directly proportional
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5
What are the two methods for measuring the volume of gas produced in a reaction?
Gas syringe or measuring cylinder filled with water
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seesaw
Swap points!
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star
Double points!
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shark
Other team loses 25 points!
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thief
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25
5
What does it show when the line of the graphs has levelled off (gone flat)?
That the reaction has stopped
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5
Which is the highest concentration? 10m 2M 25 mmol 0.5M
2 M
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What is the name of the piece of equipment labelled A?
Gas syringe
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thief
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25
star
Double points!
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shark
Other team loses 25 points!
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baam
Lose 25 points!
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banana
Go to last place!
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gold
Win 50 points!
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rocket
Go to first place!
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baam
Lose 5 points!
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5
What two things must happen for particles to react?
They must collide and with enough energy for the collision to be successful
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5
Explain how decreasing the temperature of a reaction changes the rate of a reaction
The particles will have less energy, so there are less successful collisions and a slower rate of reaction
