Alkanes

If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?

• 20

• 22

• 40

• 42

The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.

• single

• double

• triple

• quadruple

2-methyl propane is an isomer of

• propane

• butane

• pentane

• hexane

-CH2 - CH2 - CH3 is named as ________.

• alkyl

• ethyl

• propyl

• methyl

What is the general formula for alkanes?

Which of the following physical properties is generally true for alkanes?

• They are highly soluble in water.

• They have high boiling points.

• They are less dense than water.

• They are highly reactive.

Alkanes are known as saturated hydrocarbons because they contain only carbon-hydrogen single bonds.

• True

• False

Which reaction involves the addition of hydrogen to an alkene to form an alkane?

• Hydration

• Hydrogenation

• Halogenation

• Polymerization

What is the main difference between alkanes and alkenes?

• Alkanes have single bonds, while alkenes have double bonds

• Alkanes are unsaturated, while alkenes are saturated

• Alkanes are more reactive than alkenes

• Alkanes can be polymerised, while alkenes cannot

Tags

NGSS.HS-PS1-1

What is the process called when a large alkane is broken down into smaller alkanes and alkenes?

• Polymerization

• Hydrogenation

• Cracking

• Halogenation