CHEMISTRY PAPER 2 ORGANIC AND PHYSICAL
CHEMISTRY 2026 REVISION QUESTIONS AND
ANSWERS
◉ What are the simplest type of hydrocarbon? Answer: alkanes
◉ What is the general formula for alkanes? Answer: CₙH₂ₙ₊₂
◉ What is a homologous series? Answer: A family of organic
compounds that have the same functional group, similar chemical
properties and the same general formula
◉ How many bonds does each atom have in an alkane? Answer: 4
◉ What type of bonds do alkanes have? Answer: single covalent
bonds
◉ Are alkanes saturated or unsaturated? Answer: Saturated
compounds
◉ What are the first four alkanes? Answer: methane, ethane,
propane, butane
,◉ What is methane as a dispayed formular? Answer:
◉ What is ethane as a displayed formualr? Answer:
◉ What is Propane as a displayed formular? Answer:
◉ What is Butane as a displayed formular? Answer:
◉ What is a displayed formular? Answer: A digram showing the
atoms and bonds in a molecule using atomic symbols and lines to
represent bonds
◉ What atoms do Hydrocarbons conatin? Answer: Hydrogen
Carbon
◉ How does the legnth of the carbon chain effect viscocity? Answer:
The shorter the carbon chain, the less viscous the hydrocarbon is
◉ What does more volitle mean? Answer: It turns into a gas at a
lower temperature
, ◉ How does the size of the hydrocarbon effect the boiling point?
Answer: The shorter the chain, the lower the boiling point
◉ How does size of the carbon chain effect how flammable a
hydrocarbon is ? Answer: The shorter the chain of hydrocarbon, the
more flammable the hydrocarbon is
◉ What are short chain hydricarbon swith lower boiling point used
as? Answer: 'Bottled Gases' - stored under pressure as liquid in
bottles
◉ What is the equation for the complte combustion of any
hydrocarbon? Answer: Hydrocarbon + Oxygen --> carbon dioxide +
water (+ lots of energy)
◉ What is oxidised when during the complete combustion of a
hydorcarbon. Answer: Both the carbon and the hydrogen
◉ Why are hydrocarbons used as fuels? Answer: They release a very
large amount of energy when they combust completely
◉ How do you write a balanced symbol equation for the complete
combustion of a hydrocarbon? Answer: Balance left hand side
Balance right hand side.
CHEMISTRY 2026 REVISION QUESTIONS AND
ANSWERS
◉ What are the simplest type of hydrocarbon? Answer: alkanes
◉ What is the general formula for alkanes? Answer: CₙH₂ₙ₊₂
◉ What is a homologous series? Answer: A family of organic
compounds that have the same functional group, similar chemical
properties and the same general formula
◉ How many bonds does each atom have in an alkane? Answer: 4
◉ What type of bonds do alkanes have? Answer: single covalent
bonds
◉ Are alkanes saturated or unsaturated? Answer: Saturated
compounds
◉ What are the first four alkanes? Answer: methane, ethane,
propane, butane
,◉ What is methane as a dispayed formular? Answer:
◉ What is ethane as a displayed formualr? Answer:
◉ What is Propane as a displayed formular? Answer:
◉ What is Butane as a displayed formular? Answer:
◉ What is a displayed formular? Answer: A digram showing the
atoms and bonds in a molecule using atomic symbols and lines to
represent bonds
◉ What atoms do Hydrocarbons conatin? Answer: Hydrogen
Carbon
◉ How does the legnth of the carbon chain effect viscocity? Answer:
The shorter the carbon chain, the less viscous the hydrocarbon is
◉ What does more volitle mean? Answer: It turns into a gas at a
lower temperature
, ◉ How does the size of the hydrocarbon effect the boiling point?
Answer: The shorter the chain, the lower the boiling point
◉ How does size of the carbon chain effect how flammable a
hydrocarbon is ? Answer: The shorter the chain of hydrocarbon, the
more flammable the hydrocarbon is
◉ What are short chain hydricarbon swith lower boiling point used
as? Answer: 'Bottled Gases' - stored under pressure as liquid in
bottles
◉ What is the equation for the complte combustion of any
hydrocarbon? Answer: Hydrocarbon + Oxygen --> carbon dioxide +
water (+ lots of energy)
◉ What is oxidised when during the complete combustion of a
hydorcarbon. Answer: Both the carbon and the hydrogen
◉ Why are hydrocarbons used as fuels? Answer: They release a very
large amount of energy when they combust completely
◉ How do you write a balanced symbol equation for the complete
combustion of a hydrocarbon? Answer: Balance left hand side
Balance right hand side.
