The Library · Chemistry

Chemistry
Lower Secondary

Grades 6–8

0 of 29 lectures are ready to read. The rest are listed so you can see where the subject goes; each one switches on as it is finished.

States of Matter0 of 3 ready
  1. 01Solids, liquids, and gases — the particle modelcoming soon
  2. 02Changing state — melting, boiling, freezing, condensingcoming soon
  3. 03Diffusion — particles spreading outcoming soon
Pure Substances and Mixtures0 of 2 ready
  1. 01Pure substances vs mixtures — the differencecoming soon
  2. 02Separating mixtures — filtration, evaporation, distillationcoming soon
Physical and Chemical Changes0 of 1 ready
  1. 01Physical vs chemical changes — reversible vs notcoming soon
Atomic Structure (Intro)0 of 2 ready
  1. 01The atom — protons, neutrons, electronscoming soon
  2. 02Electron shells — how electrons are arrangedcoming soon
The Periodic Table0 of 2 ready
  1. 01The periodic table — groups and periodscoming soon
  2. 02Group 1, Group 7, and Group 0 — key familiescoming soon
Chemical Bonding (Intro)0 of 2 ready
  1. 01Ionic bonding — metals give electrons to non-metalscoming soon
  2. 02Covalent bonding — sharing electronscoming soon
Writing and Balancing Equations0 of 3 ready
  1. 01Word equations — describing reactions in wordscoming soon
  2. 02Chemical formulae — writing them correctlycoming soon
  3. 03Balancing symbol equationscoming soon
Types of Reactions0 of 4 ready
  1. 01Combustion — burning in oxygencoming soon
  2. 02Acids and alkalis — pH and neutralisationcoming soon
  3. 03Oxidation and reduction — a first lookcoming soon
  4. 04Displacement reactions — more reactive displaces lesscoming soon
Rates of Reaction (Intro)0 of 2 ready
  1. 01How fast do reactions go — measuring ratecoming soon
  2. 02Factors that affect rate — a first lookcoming soon
The Atmosphere0 of 3 ready
  1. 01Composition of the atmospherecoming soon
  2. 02The greenhouse effect and climate changecoming soon
  3. 03Air pollution — sources and effectscoming soon
Water and the Water Cycle0 of 2 ready
  1. 01The water cycle — evaporation, condensation, precipitationcoming soon
  2. 02Treating water — making it safe to drinkcoming soon
Metals and the Earth0 of 3 ready
  1. 01Where do metals come from — ores and extractioncoming soon
  2. 02Alloys — mixing metalscoming soon
  3. 03Recycling metals — why it matterscoming soon