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Question 1

how would you make a soluble salt from an alkali

Answer 1

1. perform titration experiment with indicator to determine exact volume of acid and alkali to be mixed
2. repeat without and indicator
3. evaporate h20 until crystals start forming
   4.filter of crystals
4. dry in oven

Question 2

how would you make a soluble salt from a non-alkali

Answer 2

1. add excess base to a warm solution of acid and stir
   2.filter out excess base
2. evaporate h20 until crystals start forming
   4.filter of crystals
3. dry in oven

Question 3

how would you make an insoluble salt

Answer 3

1. mix a nitrate of the metal and a soluble solution and a soluble salt of the non metal in the participate
   2.filter out the insoluble salt and wash it several times with a deionised water.
2. dry in oven

Question 4

what is a finite resource

Answer 4

a resource that can be used up

Question 5

what are characteristics of short chain hydrocarbons

Answer 5

small number of carbon atoms
Shorter hydrocarbon molecules have weaker intermolecular forces and lower boiling points. They are highly volatile and therefore extremely flammable.

Question 6

what happens in the fractional distillation of crude oils

Answer 6

During the fractional distillation of crude oil:
heated crude oil enters a tall
fractionating column or tower, which is hot at the bottom and gets cooler towards the top vapours from the oil rise through the column vapours condense when they become cool enough liquids are led out of the column at different heights
The shortest hydrocarbons have very low boiling points. They do not condense, but leave the column in the gas state.

Question 7

what are characteristics of long chain hydrocarbons

Answer 7

large number of carbon atoms
The longest hydrocarbons have very high boiling points. They leave the column as a hot liquid called bitumen.

Question 8

what are uses of crude oil

Answer 8

Crude oil is an important source of:
fuels
feedstock for the petrochemical
industry

Question 9

what does a metal and acid make

Answer 9

salt + h2

Question 10

what does a metal oxide and acid make

Answer 10

salt+ h20

Question 11

does metal hydroxides + acid make

Answer 11

salt + h20

Question 12

what does metal carbonate and acid make

Answer 12

Salt + h20 + co2

Answer 13

Atom economy = mr of desired product / total mr of all products

Question 15

What is a polymer

Answer 15

A substance of high molecular mass made up of small repeating units