A2 Life & Health Sciences - Unit 2 Organic
Chemistry Exam 1 Questions Answered
Correctly (Qs) 2026 update
What is a hydrocarbon? - CORRECT ANSWERS A hydrocarbon is composed of only carbon and
hydrogen.
What are the two most common homologous series? - CORRECT ANSWERS Alkanes and
alkenes.
Describe alkanes. - CORRECT ANSWERS Alkanes are saturated. They contain no C=C and no
C≠C bonds.
Describe alkenes. - CORRECT ANSWERS Alkenes are unsaturated. They contain at least 1 C=C
or C≠C double bond.
What is the general formula for an alkane? - CORRECT ANSWERS CnH₂n+₂.
What is the general formula for an alkene? - CORRECT ANSWERS CnH₂n.
What does IUPAC stand for? - CORRECT ANSWERS International Union of Pure and Applied
Chemistry.
What does the IUPAC do? - CORRECT ANSWERS Comes up with the rules for naming organic
compounds.
Recite what each compound starts with from one to eight. - CORRECT ANSWERS 1. Meth
, 2. Eth
3. Prop
4. But
5. Pent
6. Hex
7. Hept
8. Oct.
What is empirical formula and give an example. - CORRECT ANSWERS A formula which shows
the simplest whole number ration of each element in a compound.
Eg. Ethane −> C₂H₆ = CH₃.
What are functional groups and give an example. - CORRECT ANSWERS Is the reactive group
within a compound.
Eg. Alkenes -> C=C bond.
What is molecular formula and give an example. - CORRECT ANSWERS States the actual
number of atoms of each element in a molecule.
Eg. Ethane is C₂H₆.
What is skeletal formula and give an example. - CORRECT ANSWERS This shows only the
carbon skeleton as straight lines, each of which represents C-C bonds, plus any functional groups.
Eg. Propane -> \/ (two lines).
What is the definition of a homologous series? - CORRECT ANSWERS A family of organic
compounds that have:
The same general formula.
Chemistry Exam 1 Questions Answered
Correctly (Qs) 2026 update
What is a hydrocarbon? - CORRECT ANSWERS A hydrocarbon is composed of only carbon and
hydrogen.
What are the two most common homologous series? - CORRECT ANSWERS Alkanes and
alkenes.
Describe alkanes. - CORRECT ANSWERS Alkanes are saturated. They contain no C=C and no
C≠C bonds.
Describe alkenes. - CORRECT ANSWERS Alkenes are unsaturated. They contain at least 1 C=C
or C≠C double bond.
What is the general formula for an alkane? - CORRECT ANSWERS CnH₂n+₂.
What is the general formula for an alkene? - CORRECT ANSWERS CnH₂n.
What does IUPAC stand for? - CORRECT ANSWERS International Union of Pure and Applied
Chemistry.
What does the IUPAC do? - CORRECT ANSWERS Comes up with the rules for naming organic
compounds.
Recite what each compound starts with from one to eight. - CORRECT ANSWERS 1. Meth
, 2. Eth
3. Prop
4. But
5. Pent
6. Hex
7. Hept
8. Oct.
What is empirical formula and give an example. - CORRECT ANSWERS A formula which shows
the simplest whole number ration of each element in a compound.
Eg. Ethane −> C₂H₆ = CH₃.
What are functional groups and give an example. - CORRECT ANSWERS Is the reactive group
within a compound.
Eg. Alkenes -> C=C bond.
What is molecular formula and give an example. - CORRECT ANSWERS States the actual
number of atoms of each element in a molecule.
Eg. Ethane is C₂H₆.
What is skeletal formula and give an example. - CORRECT ANSWERS This shows only the
carbon skeleton as straight lines, each of which represents C-C bonds, plus any functional groups.
Eg. Propane -> \/ (two lines).
What is the definition of a homologous series? - CORRECT ANSWERS A family of organic
compounds that have:
The same general formula.
