WhizzNotes

Chemistry

Atoms, the periodic table, bonding and reactions. Written for Year 10 to 12 students and anyone preparing for a chemistry entrance exam.

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Pick your year on any chapter.

Unit 1 Working Scientifically

  1. 1Planning an InvestigationResearch, hypotheses, variables, safety, and how to write a method someone else can follow.
  2. 2Data, Graphs and ErrorsResults tables, graphs, trends, errors and uncertainty, and how to judge and improve an experiment.

Unit 2 Chemistry Maths

  1. 3Units and Unit ConversionsSI units, prefixes, mass, volume and temperature conversions, and scientific notation.
  2. 4Ratios and Rearranging EquationsRatios, proportion, percentages, density, and how to rearrange any formula to find the unknown.

Unit 3 Atoms

  1. 5Inside the AtomElements and atoms, how the model of the atom changed over time, and the nucleus and electron cloud.
  2. 6Protons, Neutrons and ElectronsCharges and masses of the three particles, atomic and mass numbers, isotopes and ions.
  3. 7Electron ConfigurationHow electrons fill shells, Bohr diagrams for the first 20 elements, valence electrons and subshells.

Unit 4 The Periodic Table

  1. 8Reading the Periodic TableHow the table is arranged, groups and periods, metals and non-metals, and the main families of elements.
  2. 9Trends in the Periodic TableHow atomic size, reactivity, metallic character and electronegativity change across periods and down groups.

Unit 5 Bonding, Structure and Properties

  1. 10Ionic BondingMetals give electrons to non-metals. Writing ionic formulas, naming ionic compounds, and why salt is hard and brittle.
  2. 11Covalent BondingNon-metals share electrons. Single, double and triple bonds, electron dot diagrams, and naming molecules.
  3. 12Metallic BondingPositive ions in a sea of electrons, why metals conduct and bend, and how alloys make metals stronger.
  4. 13Structure and PropertiesThe four main structures, diamond and graphite, and how to identify a mystery substance from its properties.

Unit 6 Chemical Reactions

  1. 14Chemical Reactions and EquationsPhysical and chemical changes, signs of a reaction, conservation of mass, and writing word and formula equations.
  2. 15Balancing Chemical EquationsCount atoms, change only the big numbers, and balance any equation step by step.
  3. 16CombustionThe fire triangle, complete and incomplete combustion of fuels, testing the products, and burning metals.

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