Year 10 Autumn Test Improvements

Question 1

What happens to crude oil in the furnace

Answer 1

Crude oil is vaporised and all the small chain molecules will rise up to the top and long chained will go to the bottom.

Question 2

What are hydrocarbons?

Answer 2

Hydrocarbons are compounds with hydrogen and carbon atoms only.

Question 3

What is Viscosity

Answer 3

When the intermolecular forces of attraction are strong within a liquid, there is a larger viscosity.

Question 4

Describe the test for unsaturation in C3H6

Answer 4

Bubble C3H6 through bromine water

Question 5

What is the observation from C3H6 when testes

Answer 5

Bromine water goes from orange to colourless

Question 6

What type of formula is C3H6

Answer 6

Molecular

Question 7

What type of formula is CnH2n

Answer 7

General

Question 8

What type of formula is CH2

Answer 8

Empirical

Question 9

Why was Mendeleev’s law Originally not accepted

Answer 9

He didn’t explain his ideas clearly

He didn’t know all the properties of certain substances