Random

Question 1

What is fractional distillation a process used to separate?

Answer 1

Hydrocarbons

Question 2

What are hydrocarbons separated by in fractional distillation?

Answer 2

Boiling point

Question 3

Is the fractional distillation column hotter on top or bottom?

Answer 3

Bottom

Question 4

Where are the longer chain hydrocarbons condensed and sectioned off?

Answer 4

At the bottom

Question 5

Why are the shorter chain hydrocarbons condensed and sectioned off near the top?

Answer 5

Smaller boiling point

Question 6

What is done to the crude oil before it enters the fractional distillation column?

Answer 6

Heated until (mostly) evaporated

Question 7

What happens to the gas particles once they enter the fractional distillation column?

Answer 7

They rise

Question 8

Are the hydrocarbons in a fractional distillation column piped of separately or together?

Answer 8

Separately

Question 9

What’s an alkane?

Answer 9

The simplest type of hydrocarbon, only one covenant bond

Question 10

Are Alkanes saturated or desaturated?

Answer 10

Saturated

Question 11

How many bonds to Alkanes have?

Answer 11

One

Question 12

What are the bonds of an alkane?

Answer 12

Covalent

Question 13

What’s the general formula of an alkane?

Answer 13

C(2) H(2n+2)

Question 14

First 5 Alkanes?

Answer 14

Methane, Ethane, Propane, Butane, Pentane

Question 15

What are the two methods of cracking?

Answer 15

Steam and catalytic

Question 16

What do both methods of cracking require?

Answer 16

Heat / high temperature

Question 17

What is cracking?

Answer 17

Breaking down long chain hydrocarbons into shorter, more useful ones

Question 18

As well as shorter chain alkanes, what else does cracking produce?

Answer 18

Alkenes

Question 19

What is more reactive, Alkenes or alkanes?

Answer 19

Alkenes

Question 20

How are Alkenes tested for?

Answer 20

Bromine water

Question 21

What happens to the bromine water when Alkenes are present?

Answer 21

Turns from Orange or colourless

Question 22

Why is cracking done?

Answer 22

Because of the high demand for fuels with shorter carbon chains

Question 23

What are Alkenes used to make?

Answer 23

Polymers

Question 24

Alkenes are a staring material to make other what?

Answer 24

Chemicals

Question 25

What is a pure substance?

Answer 25

A substance containing only one element or compound

Question 26

2 ways to test if a substance is chemically pure?

Answer 26

Boil it Melt it

Question 27

If a substance is chemically pure it will melt and boil at what?

Answer 27

A specific temperature

Question 28

What increases the melting range and lowers the melting point?

Answer 28

Impurities

Question 29

What increases the boiling point and boiling range?

Answer 29

Impurities

Question 30

What are formulations?

Answer 30

Useful mixtures with a precise purpose

Question 31

What are mixtures made with a specific use/ precise purpose?

Answer 31

Formulations

Question 32

What is medicine an example of?

Answer 32

A formulation

Question 33

What is fuel an example of?

Answer 33

A formulation

Question 34

What is food an example of?

Answer 34

Formulation

Question 35

What is cleaning products an example of?

Answer 35

Formulation

Question 36

What is the Gas test for Hydrogen?

Answer 36

Using a lit splint with Hydrogen in an open test tube to produce a squeaky pop

Question 37

What is the Gas test for oxygen?

Answer 37

Relighting a glowing splint with oxygen gas

Question 38

What is the Gas test for Chlorine?

Answer 38

Bleaches damp litmus paper (from blue?) to white, (using chlorine gas)

Question 39

What is the Gas test for Carbon Dioxide?

Answer 39

Makes limewater turn cloudy when shaken with, or bubbled through it