BTEC Chemistry Level 3 (Applied science)-Exam
Questions and Answers Verified Solutions Latest
Update
Question 1.
what are the three standard conditions
Correct Answer: temperature
concentration
pressure
Question 2.
what are the units for the three standard conditions
Correct Answer: temperature- 298k
concentration- 1mol dm-3
pressure- 100kpa
Question 3.
what is the equation for enthalpy change
Correct Answer: change in internal energy + pressure x change in value
Question 4.
how o you convert Celsius to kelvin
Correct Answer: + 273
Question 5.
What is a catalyst?
Correct Answer: a substance that speeds up the rate of reaction by decreasing the
activation energy needed for the
reaction, so it provides the reaction with an alternate pathway. the catalyst is never
used up throughout
the reaction
Question 6.
What is Hess's Law?
Correct Answer: The total enthalpy change of a reaction is independent of the route
taken.
Question 7.
What is lattice energy?
Correct Answer: the energy required to make one mole of an ionic lattice
, Question 8.
what is the homologous series?
Correct Answer: A group of chemicals that react in a similar way because they have
the same functional group
Question 9.
what type of bond is an alkane?
Correct Answer: single
Question 10.
what type of bond is an alkene?
Correct Answer: Double
Question 11.
what type of bond is an alkyne
Correct Answer: Tripple
Question 12.
what is the general equation for an alkane?
Correct Answer: Cn2H2n+2
Question 13.
what is the general equation for an alkene?
Correct Answer: Cn2H2n
Question 14.
what is the general equation for an alkyne?
Correct Answer: Cn2H2n-2
Question 15.
what is the name given to a compound with one carbon chain
Correct Answer: meth
Question 16.
what is the name given to a compound with two carbon chain
Correct Answer: eth
Question 17.
what is the name given to a compound with three carbon chain
Correct Answer: prop
Questions and Answers Verified Solutions Latest
Update
Question 1.
what are the three standard conditions
Correct Answer: temperature
concentration
pressure
Question 2.
what are the units for the three standard conditions
Correct Answer: temperature- 298k
concentration- 1mol dm-3
pressure- 100kpa
Question 3.
what is the equation for enthalpy change
Correct Answer: change in internal energy + pressure x change in value
Question 4.
how o you convert Celsius to kelvin
Correct Answer: + 273
Question 5.
What is a catalyst?
Correct Answer: a substance that speeds up the rate of reaction by decreasing the
activation energy needed for the
reaction, so it provides the reaction with an alternate pathway. the catalyst is never
used up throughout
the reaction
Question 6.
What is Hess's Law?
Correct Answer: The total enthalpy change of a reaction is independent of the route
taken.
Question 7.
What is lattice energy?
Correct Answer: the energy required to make one mole of an ionic lattice
, Question 8.
what is the homologous series?
Correct Answer: A group of chemicals that react in a similar way because they have
the same functional group
Question 9.
what type of bond is an alkane?
Correct Answer: single
Question 10.
what type of bond is an alkene?
Correct Answer: Double
Question 11.
what type of bond is an alkyne
Correct Answer: Tripple
Question 12.
what is the general equation for an alkane?
Correct Answer: Cn2H2n+2
Question 13.
what is the general equation for an alkene?
Correct Answer: Cn2H2n
Question 14.
what is the general equation for an alkyne?
Correct Answer: Cn2H2n-2
Question 15.
what is the name given to a compound with one carbon chain
Correct Answer: meth
Question 16.
what is the name given to a compound with two carbon chain
Correct Answer: eth
Question 17.
what is the name given to a compound with three carbon chain
Correct Answer: prop
