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Rate of reaction GCSE 9-1 Flashcards | StudBud
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Rate of reaction GCSE 9-1
Rate of reaction GCSE 9-1
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5.6.1 Rate of reaction new GCSE, 9-1 , AQA
Flashcards
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Questions
20
Answers
1
What is the name given to the minimum amount of energy that particles must have to react?
Reaction energy
Collision energy
Particle energy
Activation energy
2
Which letter represents the activation energy with a catalyst?
B
A
3
If the concentration of a reactant is increased what effect does that have?
more reactants are made
more products are made
rate of reaction decreases
backward reaction increases
4
How does increasing the temperature change the rate of a reaction?
Increases kinetic energy and frequency of collisions
Increases heat energy of the particles
Increases the amount of particles and frequency of collision
Decreases the frequency of collisions
5
The quantity of reactant or product can be measured by mass in
weight
volume
area
grams
6
What does this symbol mean?
Reversible reaction
Equilibrium
Train station
Travel in both directions
7
If something increases the rate of reaction but does not get used up, what is it called?
Alkenes
Dogilyst
Catalyst
Graphite
8
Which theory explains how various factors affect rates of reactions?
Big band theory
The theory of evolution
Collision theory
The theory of relativity
9
The units of rate of reaction may be given as......
g/s or cm3/s
g/s or N
amps or volts
m/s or cm
10
Which factors affect the rates of chemical reactions?
temperature
concentration of reactants
pressure
all three
11
If we increase the temperature, what effect does it have on a system at equilibrium?
It will increase the endothermic reaction
It will increase the exothermic reaction
12
Increasing the temperature would favour which reaction?
backward
forward
13
If a reversible reaction is exothermic in one direction, what is it in the other?
no change
endothermic
dangerous
exothermic
14
How can I increase the surface area of the calcium carbonate shown?
Grind it to a powder
Get larger pieces
15
Which principle can predict effect of changing conditions on a system in equilibrium?
Le Chatelier's principle
Newton's
Fermat
Archimedes
16
The quantity of reactant or product can be measured by volume in
cm2
cm3
seconds
grams
17
If I increase the pressure which way would the reaction shift?
backward
forward
18
What is meant by equilibrium in a reaction?
When a maximum amount of products are made
When the reaction stops as it is equal on both sides
When forward and reverse reactions occur at the same rate
When all the reactants are used up
19
What happens if we increase the pressure of a gaseous reaction at equilibrium?
Shift towards the side with the smaller number of molecules
Shifts towards the side with the larger number of molecules
20
How can we measure the rate of a chemical reaction?
measuring time
measuring quantity of reactant or product
use a ruler
write the results in a table
