KM

Chemistry

Class Work:

U3 - reactants

Core skills

National 5:

Using your knowledge of chemistry, describe the structure and bonding of oxygen, boron and argon.

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)

General Science:

  • Try to draw and label an animal cell and a plant cell. If there are parts that you don’t remember, use this link: https://www.bbc.co.uk/bitesize/guides/zpqpqhv/revision/7

  • Explain the function of each of those parts

  • Write down the number of proton, electron, neutron and mass number of the following (you may need to use the chemistry data booklet on the right):

    • carbon-13

    • Oxygen-15

    • Uranium-235

  • Extension: write down the nuclide notation of the elements above.

Let me know when you are down, we are going to work on the the powerpoint on the right from slide 12 together.

Formula and structure

Core skills

N5 - Hydrocarbon

U1 - bonding