New chemistry based on past papers

What is attraction like in a metallic bond

Electrostatic attraction between positively charged ions and delocalised negative electrons

Use of kerosene

aircraft fuel

use of heavy fuel oil

ships

use of refinery gases

bottled gas

Order of fractions

refinery gases, gasoline, kerosene, diesel, fuel oil, bitumen

use of bitumen

roads and roofs

Give caharacteristic of cathode

Negative electrode, lack of electrons

Give characteristics of anode

positive electrode, attracts electron

Test for chlorine

Bleaches damp litmus paper

Test for sulfate ion

HCL, barium chloride, white precipitate

what does bromine water test for

alkene

How to test for ammonium

sodium hudroxide and warm

General formula for alkanes

CnH2n+2

General formula for alkenes

CnH2n

Why do longer chain hydrocarbons have a higher boiling point

stronger intermolecular forces

what is used for catalytic cracking

silica