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Basic concepts and Hydrocarbons (4.1)

Total questions: 52

Worksheet time: 37mins

Name
Class
Date
1.

Staright Chain Hydrocarbon

a)

Aliphatic

b)

Alicyclic

c)

Aromatic

2.

Ring Structure Hydrocarbon

a)

Aliphatic

b)

Alicyclic

c)

Aromatic

3.

Hydrocarbon that contain Benzene

a)

Aliphatic

b)

Alicyclic

c)

Aromatic

4.

Which is displayed formula?

a)
b)
c)

C6H14

d)

CH3(CH2)4CH3

5.

Which is structural formula?

a)
b)
c)

C6H14

d)

CH3(CH2)4CH3

6.

Which is Empirical formula?

a)
b)

C6H14

c)

CH3(CH2)4CH3

d)

C3H7

7.

Which is molecular formula?

a)
b)

C6H14

c)

CH3(CH2)4CH3

d)

C3H7

8.

Which is skeletal formula?

a)
b)

C6H14

c)

C3H7

d)
9.

An unsaturated hydrocarbon contains:

a)

C=C

b)

C-C

c)

-COOH

d)

C=O

10.

What is the formula for cyclohexane?

(a)  

11.

What is the formula for Bromine?

(a)  

12.

Structural isomers have:

a)

Same molecular formula

b)

Same structural formula

c)

Different structural formula

d)

Different arrangement of atoms in space

13.

Stereoisomers have:

a)

Same molecular formula

b)

Same structural formula

c)

Different structural formula

d)

Different arrangement of atoms in space

14.

Which molecule has trans isomersism?

a)

Left

b)

Right

15.

Which molecule has cis isomersism?

a)

Left

b)

Right

16.

E/Z isomerism is about functional group priorities on which bond?

a)

C=C

b)

C=O

c)

C-C

d)

C-H

17.

Is an alkene has Z isomerism, the priority groups are on ------ sides of the bond

(a)  

18.

Is an alkene has E isomerism, the priority groups are on ------ sides of the bond

(a)  

19.

What isomerism does this molcecule have

a)

Z isomerism

b)

E isomerism

c)

Cis isomerism

d)

Trans isomerism

20.

In a reaction mechanism a normal curly arrow represents:

a)

Movement on electron pairs

b)

Movement of one electron

c)

Movement of atoms

d)

Direction of reaction

21.

Definition: when a covalent bond breaks and each atom gets one electrons from bonded pair

(a)  

22.

Definition: when a covalent bond breaks and one atom gets all the bonding electrons

(a)  

23.

Covalent bonds are normally broken via:

a)

Heterolytic fission

b)

Homolytic fission

24.

Homolytic fission of covalent bonds creates:

a)

Radicals

b)

Ions

c)

Metallic bonds

d)

Covalent lattice

25.

What is TRUE about alkanes?

a)

Have a CnH2n+2 general formula

b)

Are saturated hydrocarbons

c)

Boiling point increases as Mr increases

d)

Have all sigma-bonds

26.

What causes the increase in boiling points as alkanes increase in chain length?

a)

Increased London Forces

b)

Decreased London Forces

c)

Increased contact points

d)

Decreased contact points

27.

The more branched a molecule is, what decreases?

a)

Contact points

b)

London Forces

c)

Boiling point

d)

The Mr

28.

When alkanes go through complete combustion, what is produced?

a)

CO2

b)

H2O

c)

CO

d)

C

29.

When alkanes go through incomplete combustion, what can be produced?

a)

CO2

b)

H2O

c)

CO

d)

C

30.

What element is required for combustion of alkanes?

(a)  

31.

UV light is required for which alkane reaction?

a)

Radical substitution

b)

Combustion

c)

Electrophilic addition

d)

Nucleophilic addition

32.

What are the three stages of radical substitution?

a)

Initiation

b)

Propagation

c)

Termination

d)

Chlorination

33.

Which two halogens can alkanes preform radical substitution with?

a)

Chlorine

b)

Bromine

c)

Fluorine

d)

Iodine

34.

What stage of radical substitution is this?

(a)  

35.

What stage of radical substitution is this?

(a)  

36.

What stage of radical substitution is this?

(a)  

37.

What is TRUE for alkenes?

a)

Unsaturated hydrocarbon

b)

General forumal of CnH2n

c)

Can form stereoisomers

d)

Have sigma and pi bonds

38.

A C=C bonds has:

a)

Pi-bonds

b)

Sigma-bonds

c)

Alpha-bonds

d)

Beta-bonds

39.

Alkenes are ----- reactive than alkanes

a)

More

b)

Less

40.

What kind of charge do electrophiles have?

(a)  

41.

Hydrogenation of alkenes is what type of reaction?

a)

Addition

b)

Substitution

c)

Reduction

d)

Polymerisation

42.

What temperature is needed for the hydrogenation of alkenes?

(a)  

43.

What catalyst is needed for the hydrogenation of alkenes?

(a)  

44.

The hydrogenation of alkenes produces what?

(a)  

45.

Halogenation of alkenes is what type of reaction?

a)

Addition

b)

Substitution

c)

Reduction

d)

Polymerisation

46.

Hydration of alkenes is what type of reaction?

a)

Addition

b)

Substitution

c)

Reduction

d)

Polymerisation

47.

What catalyst is needed for hydration of alkenes?

(a)  

48.

What are the conditions needed for the hydration of alkenes?

a)

300*C

b)

65 atm

c)

273*C

d)

1 atm

49.

What is produced during hydration of alkenes?

(a)  

50.

Which alkene reaction can create isomers?

a)

Addition of hydrogen halides

b)

Hydrogenation

c)

Halogenation

d)

Hydration

51.

What type of polyermerisation do alkenes do?

a)

Condensation

b)

Addition

c)

Substitution

d)

Hydrolysis

52.

Which are sustatinable ways of dealing with alkene polymers?

a)

Reusing

b)

Recycling

c)

Organic feedstock

d)

Combustion for electricity

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