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Worksheets

Structure and Formulae

Total questions: 25

Worksheet time: 1hrs 22mins

Name
Class
Date
1.
What is the name of this carbonyl compound?
a)
pentan-2-one
b)
hexan-5-one
c)
pentan-3-one
d)
hexan-2-one
2.

The molecules in the example are examples of

a)

Isomers

b)

Isotopes

c)

Alkenes

d)

Alkynes

3.

Name the molecule shown

a)

Heptane

b)

Octane

c)

2,3-dimethylpentane

d)

Pentane

e)

3,4-dimethylpentane

4.

What chemical is this? (C5H10)

a)

Pentene

b)

Pentane

c)

Hexane

d)

Heptene

5.

Which of the following shows the structure of propene?

a)
b)
c)
d)
6.

Which of the following is a saturated hydrocarbon?

a)

ethene

b)

heptane

c)

propyne

d)

methanol

7.

this is

a)

aromatic hydrocarbon

b)

alkyne

c)

alkene

8.
Name this structure.
a)
1,2,4-dimethylcyclopentane
b)
1,2,4-trimethylcyclopentane
c)
1,3,4-trimethylcyclopentane
d)
1,3,4-dimethylcyclopentane
9.

What is the name given to the non-superimposable mirror image

forms of chiral compounds?

a)

cis-trans

b)

enantiomers

c)

functional isomers

d)

diasteriomers

10.

Which chemical formulae are chiral?

a)

HNClBrCH3

b)

H3CCHClCH2CH3

c)

Br3CCHClBr

d)

H3COH

11.

Choose the correct erm:

- An image or object that has the same form as another, but has "reversed" structure. All objects have these images.

a)

Mirror Images

b)

Optical Activity

c)

Asymetric

d)

Sterochemistry

12.
Calculate the number of sigma and pi bonds in benzene
a)
12,3
b)
6,6
c)
6,3
d)
9,3
13.

What is the Hybridization of CH4

a)

SP3

b)

SP4

c)

SP2

14.

What is the main capacity of Carbon?

a)

To make short compound chains.

b)

To make unstable bonds with other carbon atoms.

c)

To make stable bonds/links with other carbon atoms .

15.

Aromatic compounds are chemical compounds that contain ________

a)
b)
c)
d)
16.
Name the following
a)
4-ethyl-6-methyl nonane
b)
3-propyl-5-methyl octane
c)
2,4-dipropyl hexane
d)
4-ethyl-2-propyl heptane
17.

What is the name for this compound?

a)

4 - propylnonane

b)

4 - ethylnonane

c)

4 - propyloctane

d)

4 - ethyloctane

18.

How many substituent(s) present in the following alkane?

a)

1

b)

2

c)

3

d)

4

19.

Does the compound shown exhibit Cis- or Trans- isomerism? (or neither)?

a)

Cis

b)

Trans

c)

Neither

20.

Isomerism that arises out of the difference in spatial arrangement of atoms or groups about the doubly bonded carbon atoms are called?

a)

Structural Isomerism

b)

Stereoisomerism

c)

Geometrical Isomerism

d)

Optical Isomerism

21.

What is a functional group?

a)

Atoms or group of atoms that give specific characteristics to a molecule

b)

Group of molecules that make up a group of atoms

c)

Group of molecules that give specific characteristics to an atom

d)

Group of atoms that give specific characteristics to an element

22.

A molecule that contains C=C must exist cis-trans isomerism

a)

FALSE

b)

TRUE

23.

What is the definition of isomerism ?

a)

Isomerism is a phenomenon whereby two or more atoms are found to have the same molecular formula but different structural formula

b)

Isomerism is a phenomenon whereby two or more molecules are found to have the same molecular formula but different structural formula

c)

Isomerism are molecules that have the same chemical properties and physical properties

d)

Isomerism are atoms that have the same chemical properties and physical properties

24.

Which of the following is an unsaturated hydrocarbon?

a)

C2H6

b)

C3H8

c)

C4H8

d)

C4H10

25.

There are two main forms of isomerism, which are?

a)

Structural isomerism and Stereoisomerism

b)

Stereoisomerism and Physical isomerism

c)

Chemical isomerism and Stereoisomerism

d)

Structural isomers and Geometric Isomers

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