AQA Chemistry Paper 2 Exam
How do you measure the rate of reaction?
- Loss of Reactants - Creation of Products
Give two ways to measure the quantity of reactant or product.
Mass, pH, Gas Produced, Colour Change
What are the units for measuring rate of reaction?
Amount Measured / time An example would be cm³/min for gas produced.
How do you calculate the gradient for a tangent?
Divide up / across
,Give three ways to measure the rate of reaction.
Colour Change, Mass lost or mass gained, gas produced.
How can a change in temperature affect the rate of reaction?
A higher temperature means a faster reaction.
How a change in pressure affect the rate of reaction?
A higher pressure means a faster reaction.
How can a change in concentration affect the rate of reaction?
A higher concentration means a faster reaction.
How can a change in surface area affect the rate of reaction?
A high er surface area means a faster reaction.
,What is a catalyst?
Something that’s speeds up the rate of reaction without being used up.
How can a catalyst affect the rate of reaction?
It can speed it up.
Sketch an energy profile for catalysed and an uncatalysed reaction.
What symbol represents a reversible reaction?
'⇌'
, What happens to ammonium chloride upon heating and cooling?
Ammonium Chloride Decomposes
What is Le Chatelier's Principle
Whatever you do to a reaction the reaction will do the opposite to counter the effect.
What happens to copper sulfate on the addition and removal of water
Turns from hydrated blue form to the anhydrous white form.
hydrated copper sulfate (blue) ⇌ anhydrous copper sulfate (white)
Define hydrocarbon.
A hydrocarbon is a molecule which only has hydrogen and carbon in it.
How do you measure the rate of reaction?
- Loss of Reactants - Creation of Products
Give two ways to measure the quantity of reactant or product.
Mass, pH, Gas Produced, Colour Change
What are the units for measuring rate of reaction?
Amount Measured / time An example would be cm³/min for gas produced.
How do you calculate the gradient for a tangent?
Divide up / across
,Give three ways to measure the rate of reaction.
Colour Change, Mass lost or mass gained, gas produced.
How can a change in temperature affect the rate of reaction?
A higher temperature means a faster reaction.
How a change in pressure affect the rate of reaction?
A higher pressure means a faster reaction.
How can a change in concentration affect the rate of reaction?
A higher concentration means a faster reaction.
How can a change in surface area affect the rate of reaction?
A high er surface area means a faster reaction.
,What is a catalyst?
Something that’s speeds up the rate of reaction without being used up.
How can a catalyst affect the rate of reaction?
It can speed it up.
Sketch an energy profile for catalysed and an uncatalysed reaction.
What symbol represents a reversible reaction?
'⇌'
, What happens to ammonium chloride upon heating and cooling?
Ammonium Chloride Decomposes
What is Le Chatelier's Principle
Whatever you do to a reaction the reaction will do the opposite to counter the effect.
What happens to copper sulfate on the addition and removal of water
Turns from hydrated blue form to the anhydrous white form.
hydrated copper sulfate (blue) ⇌ anhydrous copper sulfate (white)
Define hydrocarbon.
A hydrocarbon is a molecule which only has hydrogen and carbon in it.
