The Chemist's tools 9.1.4 - Measuring and recording
Matter: states and properties of matter.
Particle/kinetic theory, diffusion.
Pure and impure substances. Types of mixtures (solutions, oils, alloys, emulsions)
Separation techniques, including filtration, distillation [including crude oil - myp10], chromatography.
They are essential for observation, But become worthless if we cannot communicate our observations in an unambiguous fashion. Communication requires the correct use of scientific vocabulary and is supported by standardised (relative) measurements.
Student follow up
Experiment write up identifying the most accurate measuring glassware.
The experiment depends on the use of an electronic balance as the instrument with the least error.
Data tables of water density at different temperatures can add sophistication for more able students.
Density of water at different temperatures