I can name the 5 physical quantities commonly measured in Chemistry experiments.
I can name appropriate apparatus to measure each quantity.
I can record a measurement to the degree of accuracy and unit of apparatus.
I can name the 4 gas collection methods.
I can name appropriate method to collect a gas.
I can name appropriate drying agent to dry a gas.
I can name the 10 methods of separating mixtures.
I can name appropriate method to separate components in a mixture.
I can explain the principle of separation for each method.
I can draw and label the experimental set-up for each separation method.
I can describe the steps and explain some steps for separating components in a mixture.
I can calculate retention factor Rf value of a substance from a chromatogram.
I can describe how to analyse the chromatogram of colourless compounds.
I can state the 3 ways to determine the purity and identity of a substance.
I can state the effects of impurities on melting and boiling points, and chromatogram.
Mixtures are impure substances containing two or more substances that are physically mixed in any ratio.
The 10 methods of separating solid-solid / solid-liquid / liquid-liquid mixtures are:
using a magnet
sublimation
using a suitable solvent
filtration
evaporation to dryness
crystallisation
simple distillation
fractional distillation
using a separating funnel
paper chromatography
A pure substance is made up of one single element or compound. It is not mixed with any other substance.