AQA Chemistry Paper 2 Questions And Ans w ers
2025/2026
c8 - CORRECT ANSWER-
rate of reaction - CORRECT ANSWER-The speed at which a chemical reaction
happens.
reactant - CORRECT ANSWER-The substances that are present before a chemical
change takes place.
product - CORRECT ANSWER-A substance produced by a chemical reaction
collision theory - CORRECT ANSWER-states that atoms, ions, and molecules must
collide in order to react.
entropy - CORRECT ANSWER-a measure of the degree of disorder in a system
,pressure - CORRECT ANSWER-a measure of force exerted per unit area; in
chemistry, most commonly the force exerted by gas molecules as they strike the
surfaces around them
catalyst - CORRECT ANSWER-A substance that speeds a chemical reaction by
lowering the activation energy of the reaction.
climate change - CORRECT ANSWER-recent changes in the Earth's climate;
evidence suggests that this is primarily due to human influence, including the
increased release of greenhouse gases
red litmus - CORRECT ANSWER-Turns blue in alkaline solution
blue litmus - CORRECT ANSWER-Turns red in acidic solution
hydrated - CORRECT ANSWER-A crystalline compound containing water molecules
anhydrous - CORRECT ANSWER-Pertaining to a compound from which the water
of crystallisation has been removed.
dynamic equilibrium - CORRECT ANSWER-The state in which rates of opposing
processes are equal
, closed system - CORRECT ANSWER-energy can be transferred to the surroundings
but matter cannot
Le Chatelier's Principle - CORRECT ANSWER-An equilibrium tends to move to
reverse a change you have made. (As in, add more reactant and it becomes more
product favoured)
C9 - CORRECT ANSWER-
hydrocarbons - CORRECT ANSWER-organic compounds that contain only
hydrogen and carbon
crude oil - CORRECT ANSWER-petroleum as it comes out of the ground and before
it has been refined or processed into useful products;
A naturally occurring mixture of many hydrocarbons.
fractions - CORRECT ANSWER-groups in fractional distillation
alkanes - CORRECT ANSWER-saturated hydrocarbons that contain single bonds
between carbon atoms
saturated hydrocarbons - CORRECT ANSWER-A hydrocarbon containing only
single carbon-carbon bonds.
2025/2026
c8 - CORRECT ANSWER-
rate of reaction - CORRECT ANSWER-The speed at which a chemical reaction
happens.
reactant - CORRECT ANSWER-The substances that are present before a chemical
change takes place.
product - CORRECT ANSWER-A substance produced by a chemical reaction
collision theory - CORRECT ANSWER-states that atoms, ions, and molecules must
collide in order to react.
entropy - CORRECT ANSWER-a measure of the degree of disorder in a system
,pressure - CORRECT ANSWER-a measure of force exerted per unit area; in
chemistry, most commonly the force exerted by gas molecules as they strike the
surfaces around them
catalyst - CORRECT ANSWER-A substance that speeds a chemical reaction by
lowering the activation energy of the reaction.
climate change - CORRECT ANSWER-recent changes in the Earth's climate;
evidence suggests that this is primarily due to human influence, including the
increased release of greenhouse gases
red litmus - CORRECT ANSWER-Turns blue in alkaline solution
blue litmus - CORRECT ANSWER-Turns red in acidic solution
hydrated - CORRECT ANSWER-A crystalline compound containing water molecules
anhydrous - CORRECT ANSWER-Pertaining to a compound from which the water
of crystallisation has been removed.
dynamic equilibrium - CORRECT ANSWER-The state in which rates of opposing
processes are equal
, closed system - CORRECT ANSWER-energy can be transferred to the surroundings
but matter cannot
Le Chatelier's Principle - CORRECT ANSWER-An equilibrium tends to move to
reverse a change you have made. (As in, add more reactant and it becomes more
product favoured)
C9 - CORRECT ANSWER-
hydrocarbons - CORRECT ANSWER-organic compounds that contain only
hydrogen and carbon
crude oil - CORRECT ANSWER-petroleum as it comes out of the ground and before
it has been refined or processed into useful products;
A naturally occurring mixture of many hydrocarbons.
fractions - CORRECT ANSWER-groups in fractional distillation
alkanes - CORRECT ANSWER-saturated hydrocarbons that contain single bonds
between carbon atoms
saturated hydrocarbons - CORRECT ANSWER-A hydrocarbon containing only
single carbon-carbon bonds.
