Things To Remember In Tests

Question 1

Ions

Answer 1

If the question asks about ions, don’t write about molecules

Question 2

Volumes

Answer 2

Make sure you do figures for the volume given and don’t assume 1dm3

Question 3

Uncertainties

Answer 3

Always multiply by 2 for burettes because you take initial and final

Question 4

where you make a ketone oxidising a secondary alcohol what is also formed

Answer 4

water

Question 5

what to include for mass spec fragment molecules

Answer 5

+ or *

Question 6

what to include if asked to predict the products of electrophilic addition

Answer 6

do both major and minor product

Question 7

stages of purifying an organic substance

Answer 7

• seperating funnel
• anhydrous salt
• redistill

Question 8

what to remember in moles calculations

Answer 8

MOLAR RATIOS

lay out as table always

Question 9

what to watch out for when doing skeletal formulae

Answer 9

e/z isomerism

Question 10

what to always mention when explaining how e/z isomerism occurs

Answer 10

no free rotation around a C=C double bond

Question 11

What is a neutralisation reaction

Answer 11

A base and an acid neutralising to form water

NOT A METAL

Question 12

Enthalpy of formation and combustion key points

Answer 12

Forms ONE MOLE

ONE MOLE burns

Question 13

Enthalpy change of reaction key points

Answer 13

It’s in the molar ratios of the question!!
If you calculate it for a substance which has two moles
Multiply it by two because you’ve only calculated it for one mole hence kjmol^-1

Question 14

Any enthalpy questions

Answer 14

Watch out for the sign on the answer

Question 15

charge on a silver ion (links to halide tests)

Answer 15

Ag+

only 1+ not 2+ !!