Past paper of the week:

Glossary:

Lattice - structure of ionic and metallic

Titration - to find the concentration of an unknown solution

Standard solution - a solution of accurately known concentration

pH indicator - identify the end-point of the experiment (titration)

Concordant - results with values within 0.2 of each other.

Pipette - accurate volumetric measurement.

unsaturation - contains C=C (decolourise Br2 water)

precipitation reaction - a solid is formed

Homologous Series - same general formula, similar chemical properties

Isomer - same molecular formula, different structure

isotope - same atomic number, different mass number

Making a salt:

• add the insoluble base (carbonate) to the acid, until it stops fizzing

• Filtration

• evaporation

Addition reactions of alkene

• hydrogenation (adding H2 to make alkane)

• hydration (adding water to make alcohol)

• halogenation (adding a halogen)

Reactions of alcohol

• dehydration (remove water to make an alkene)

• combustion (reacting with oxygen to make water and carbon dioxide)

• oxidation (adding oxygen to make a carboxylic acid)