AQA AS CHEMISTRY 7402 2 PAPER 2
ORGANIC AND PHYSICAL CHEMISTRY
COMPREHENSIVE STUDY GUIDE UPDATED
SOLVED QUESTIONS WITH COMPLETE
SOLUTION VERIFIED
⩥ rate of reaction.
Answer: The speed at which a chemical reaction happens.
⩥ reactant.
Answer: The substances that are present before a chemical change takes
place.
⩥ product.
Answer: A substance produced by a chemical reaction
⩥ collision theory.
Answer: states that atoms, ions, and molecules must collide in order to
react.
⩥ entropy.
Answer: a measure of the degree of disorder in a system
,⩥ pressure.
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.
Answer: A substance that speeds a chemical reaction by lowering the
activation energy of the reaction.
⩥ climate change.
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.
Answer: Turns blue in alkaline solution
⩥ blue litmus.
Answer: Turns red in acidic solution
⩥ hydrated.
Answer: A crystalline compound containing water molecules
, ⩥ anhydrous.
Answer: Pertaining to a compound from which the water of
crystallisation has been removed.
⩥ dynamic equilibrium.
Answer: The state in which rates of opposing processes are equal
⩥ closed system.
Answer: energy can be transferred to the surroundings but matter cannot
⩥ Le Chatelier's Principle.
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.
Answer:
⩥ hydrocarbons.
Answer: organic compounds that contain only hydrogen and carbon
⩥ crude oil.
ORGANIC AND PHYSICAL CHEMISTRY
COMPREHENSIVE STUDY GUIDE UPDATED
SOLVED QUESTIONS WITH COMPLETE
SOLUTION VERIFIED
⩥ rate of reaction.
Answer: The speed at which a chemical reaction happens.
⩥ reactant.
Answer: The substances that are present before a chemical change takes
place.
⩥ product.
Answer: A substance produced by a chemical reaction
⩥ collision theory.
Answer: states that atoms, ions, and molecules must collide in order to
react.
⩥ entropy.
Answer: a measure of the degree of disorder in a system
,⩥ pressure.
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.
Answer: A substance that speeds a chemical reaction by lowering the
activation energy of the reaction.
⩥ climate change.
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.
Answer: Turns blue in alkaline solution
⩥ blue litmus.
Answer: Turns red in acidic solution
⩥ hydrated.
Answer: A crystalline compound containing water molecules
, ⩥ anhydrous.
Answer: Pertaining to a compound from which the water of
crystallisation has been removed.
⩥ dynamic equilibrium.
Answer: The state in which rates of opposing processes are equal
⩥ closed system.
Answer: energy can be transferred to the surroundings but matter cannot
⩥ Le Chatelier's Principle.
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.
Answer:
⩥ hydrocarbons.
Answer: organic compounds that contain only hydrogen and carbon
⩥ crude oil.
