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Team 2
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Teams
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trap
No points!
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seesaw
Swap points!
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fairy
Take points!
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banana
Go to last place!
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5
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What are the two ways to calculate the rate of a reaction?
quantity of reactant used divided by time or quantity of product formed divided by time
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heart
Other team wins 15 points!
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magnet
Take 20 points!
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fairy
Take points!
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baam
Lose 20 points!
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5
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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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Explain how a catalyst changes the rate of a reaction
It speeds up the reaction by lowering the activation energy, meaning there are more successful collisions
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What are the 5 factors that effect the rate of a reaction?
Concentration, temperature, pressure, surface area and catalysts
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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
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What is the name of the piece of equipment labelled B?
Conical flask
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Which line, A or B, shows the fastest reaction? Explain your choice.
A because the line starts steeper or there is more gas produced in a shorter time
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When we increase the temperature of a reaction in equilibrium, what direction will the reaction shift towards?
The endothermic direction
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thief
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star
Double points!
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gift
Win 10 points!
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thief
Give points!
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5
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What is the name given to the energy that particles must have for a collision to be successful?
Activation energy
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What is the name of the piece of equipment labelled A?
Gas syringe
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What does it mean if a reaction is in equilibrium?
The rate of the forward and backward reactions are the same
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For both reactions, A and B, the rate of reaction slows down as time progresses. Why does this happen?
The reactants are being used up in the collisions, so their concentration decreases. This means less frequent collisions until one reactant is used up
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5
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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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