organic chemistry practice/ exam

MINISTRY OF EDUCATION

SECONDARY ENGAGEMENT PROGRAMME

GRADE 11

CHEMISTRY

WEEK 5 LESSON 1 - WORKSHEET

Circle the correct answers for items 1-6.

1. Which of the following statements is/are true of alkenes?

I they undergo substitution reactions
II they undergo addition reactions
III they undergo combustion reactions
A. I and III
B. I and II
C. III only
D. II and III
2. C2H4(g) + Cl2 (g)  C2H4Cl2
The above represents a type of reaction which is classified as
A. Substitution
B. Polymerization
C. Addition
D. Neutralization
3. The compound ethene is described as unsaturated. This means that
A. Carbon atoms in ethene are linked by single bonds
B. The molecule has insufficient hydrogen atoms
C. Carbon atoms in the molecule are very reactive.
D. The molecule contains at least one double bond.
4. When ethene reacts with steam, the ethene is
A. Oxidized to carbon dioxide
B. Converted to an ester
C. Converted to ethanol
D. Decomposed to carbon

5. With which of the following would ethene show an addition reaction?
I bromine
II oxygen
III hydrogen
IV water