2.2 Chemistry in everyday life notes

1. 2.2.1Matter, atoms and the periodic table

   Everything is made of atoms whose number of protons fixes the element, and the periodic table arranges the 118 known elements by atomic number so that elements in a group behave alike.

   Standard · 7 min · Full course
2. 2.2.2Acids, bases, salts and pH: common chemicals at home

   Acids give hydrogen ions and bases give hydroxide ions in water, pH measures which dominates, and the common salts made from them (baking soda, washing soda, bleaching powder, plaster of Paris) are staples of home and industry.

   Standard · 6 min · Full course
3. 2.2.3Metals, non-metals, alloys and corrosion

   Metals are shiny, ductile, conducting elements that vary in reactivity; they are extracted from ores, mixed into alloys for better properties and lost to corrosion unless protected.

   Standard · 6 min · Full course
4. 2.2.4Carbon compounds: allotropes, polymers, plastics, soaps and detergents

   Carbon forms millions of compounds because it bonds with itself and other atoms in chains and rings, giving fuels, plastics, fibres, soaps and detergents that shape daily life.

   Standard · 6 min · Full course

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