C7 - Organic Chemistry

Question 1

Crude oil is a finite/ infinite resource.

Answer 1

Finite

Question 2

From what is crude oil formed?

Answer 2

Th remains of tiny sea creatures called plankton buried in the mud.

Question 3

What is a hydrocarbon?

Answer 3

A molecule made up of hydrogen and carbon only

Question 4

What is the general formula of an alkane?

Answer 4

CnH2n+2

Question 5

What kind of molecules are alkanes?

Answer 5

Saturated molecules

Question 6

What does it mean when a an alkane is a saturated molecule?

Answer 6

The carbon atoms are fully bonded to the hydrogen atoms

Question 7

What does viscosity tell us about a fluid?

Answer 7

The thickness of the fluid

Question 8

Fluids with a high viscosity flow quickly/slowly.

Answer 8

Slowly

Question 9

Try or false…
The longer the chain of hydrocarbons the more viscous.

Answer 9

True

Question 10

What does flammability mean?

Answer 10

How easily something burns

Question 11

Are long or short chain hydrocarbons more flammable?

Answer 11

Short chain hydrocarbons

Question 12

What is the gas that we use in Bunsen burners?

Answer 12

Methane

Question 13

Long chain hydrocarbons are very easy/ difficult to burn.

Answer 13

Very difficult

Question 14

Do hydrocarbons have boiling points lower or higher than room temperature?

Answer 14

Lower

Question 15

When steam reacts with alkenes what is the product?

Answer 15

An alcohol

Question 16

What is the formula of ethene?

Answer 16

C2 H4

Question 17

What is the word equation for the incomplete combustion of alkenes?

Answer 17

Alkene + oxygen = carbon monoxide + carbon dioxide + water (+ energy)

Question 18

What is the word equation for the complete combustions of alkenes with oxygen?

Answer 18

Alkene + oxygen = water + carbon dioxide (+ energy)

Question 19

What is my knewmonic for the first 4 alkenes?

Answer 19

Ella = ethene
Paterson= propane
Buys= butene
Pianos= pentene

Question 20

The double/ single bond opens up an an addition reaction of an Alkene.

Answer 20

The double bond opens up

Question 21

What is the addition reaction of hydrogen with an Alkene known as?

Answer 21

Hydrogenation

Question 22

What are polymers?

Answer 22

Long molecules formed when small molecules called monomers join together.

Question 23

Name a substance that is made up of polymers.

Answer 23

Plastic

Question 24

The monomers that make up addition polymers have a single/ double
Covalent/ ionic bond.

Answer 24

Double covalent bond

Question 25

Lots of alkenes can open up their double bonds to form polymer chains. What is this called?

Answer 25

Addition polymerisation

Question 26

What is the product of 2 monomers reacting during addition polymerisation?

Answer 26

The addition polymer No other products so the polymer contains the same number of atoms as the monomers that formed it.

Question 27

Which of the alcohols is found in alcoholic drinks?

Answer 27

Ethanol

Question 28

What is ethanol used in because it is fairly clean and non- smelly?

Answer 28

Spirit burners

Question 29

Why are alcohols used as solvents in industry?

Answer 29

They can dissolve things water cant Eg- oils, fats, hydrocarbons

Question 30

What is the product when alcohols react with oxygen?

Answer 30

A carboxylic acid

Question 31

What product does this reaction form? Methanol+ oxygen

Answer 31

Methanoic acid

Question 32

What is the knewmonic for the first 4 alcohols?

Answer 32

My= methanol Extendable= ethanol Penis= propanol Broke=butanol

Question 33

Do alcohols undergo combustion in air?

Answer 33

Yes, they are very flammable

Question 34

Are alcohols soluble in water?

Answer 34

Yes they are all soluble in water Solutions have a neutral ph

Question 35

When does fermentation happen fastest?

Answer 35

37 degrees Celsius Slightly acidic solution

Question 36

What is the functional group of carboxylic acids?

Answer 36

— COOH

Question 37

What are the products of this equation? Alcohol+ carboxylic acid

Answer 37

Ester + water

Question 38

Can carboxylic acids dissolve in water?

Answer 38

Yes When they dissolve they form an acidic solution

Question 39

What is the only ester we need to learn called?

Answer 39

Ethyl ethanoate