Substitution Reactions of Alkanes

Substitution Reactions of Alkanes

Assessment

Interactive Video

Chemistry, Science, Biology

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial by Ms. Cam explores the reactions of alkanes, focusing on their low reactivity due to non-polar carbon-hydrogen bonds and strong carbon-carbon bonds. It covers the combustion reactions of alkanes, distinguishing between complete and incomplete combustion, and the products formed in each case. The video also delves into substitution reactions, explaining the initiation, propagation, and termination steps, highlighting the role of free radicals and UV light in these processes.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do alkanes exhibit low reactivity?

Due to weak carbon bonds

Due to high electronegativity

Because they have polar bonds

Because of non-polar and strong bonds

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is produced during the complete combustion of alkanes?

Carbon and hydrogen

Carbon dioxide and water

Methane and oxygen

Carbon monoxide and water

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens in incomplete combustion of alkanes?

Excess oxygen is present

Carbon dioxide is the only product

Carbon monoxide or carbon is produced

Only water is produced

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What initiates the substitution reaction in alkanes?

Excess oxygen

High temperature

UV light

Presence of water

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is formed when a chlorine molecule breaks in the initiation step?

Chlorine atoms

Chlorine gas

Chlorine free radicals

Chlorine ions

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main characteristic of the propagation step in substitution reactions?

It requires high pressure

It is a chain reaction

It involves the formation of ions

It is a slow reaction

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is produced when a methyl radical reacts with molecular chlorine?

Chloroethane

Methane

Hydrogen chloride

Ethane

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