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Introduction to alcohols do now

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Last updated almost 5 years ago
8 questions
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Question 1
1.

Match the names with their display formula

Draggable itemarrow_right_altCorresponding Item
Pentane
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Question 2
2.

True or false: as hydrocarbons get longer, they get more flammable

Question 3
3.

Question 4
4.

Question 5
5.

True or false: Ethene is a saturated hydrocarbon

Question 6
6.

What is the molecular formula of ethene? (don't worry about writing the numbers in subscript)

Question 7
7.

Which of the following is true?

Question 8
8.

DTC: Alcohols have a C-O-H group on them. One way this affects the properties of alcohols is that they have much higher melting and boiling points than alkanes. Theorise why this is, and then look up the answer. How close to the truth did you get?

Methane
Propane
Butane
Ethane
What happens to the boiling points of hydrocarbons as they get longer?
As they get longer, the boiling points increase. This is because the covalent bonds between the molecules get weaker.
As they get longer, the boiling points decrease. This is because the covalent bonds between the molecules get weaker.
As they get longer, the boiling points decrease. This is because the intermolecular forces between the molecules get weaker.
As they get longer, the boiling points decrease. This is because the covalent bonds between the molecules get stronger.
As they get longer, the boiling points decrease. This is because the intermolecular forces between the molecules get stronger.
As they get longer, the boiling points increase. This is because the covalent bonds between the molecules get stronger.
As they get longer, the boiling points increase. This is because the intermolecular forces between the molecules get stronger.
As they get longer, the boiling points increase. This is because the intermolecular forces between the molecules get weaker.
Which of the following statements are true? (choose multiple)
There is a temperature gradient in a fractionating column
As the molecules rise up the column, it gradually gets cooler
When the molecules reach the temperature just below their boiling point, they condense into a liquid
The longest chains condense out the top of the column
The hotter you make the column, the faster the process of separating the molecules
A fractionating column is a piece of apparatus used to crack longer hydrocarbons into shorter hydrocarbons
When the molecules reach the temperature just below their boiling point, they boil into a gas
The functional group of alkene homologous series is C-O-H
The functional group of alkene homologous series is C=O