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Chapter 1: Experimental Techniques - Coggle Diagram
Chapter 1: Experimental Techniques
Measurement
measuring cylinder - to nearest 0.5 cm3
burette - to nearest 0.05 cm3
beaker - approximately
pipette - 25.0 cm3
thermometer - to nearest 0.5 degree Celsius
Methods of collecting gases
downward delivery: to collect gases that are soluble in water & denser than air
upward delivery: to collect gases that are soluble in water and less dense than air
displacement of water: to collect gases that are insoluble in water
Separation techniques
filtration: to separate insoluble solid from a liquid
fractional distillation: to separate two or more miscible liquids with diff b.p.
crystallisation: to obtain a pure solid (soluble) from a solution
simple distillation: to obtain a pure solvent from a solution
chromatography: to separate and identify small amounts of substances
Physical quantities
time - seconds (s)
mass - kilogram (kg)
volume - cubic metre (m3)
temperature - kelvin (K)
other common units
minute (min), hour (h), gram (g), cubic centimeter (cm3), degree Celsius
common apparatus
electronic stopwatch, electronic balance, gas syringe, alcohol thermometer