......Su01 Properties of distilled water 1: Colour, transparency,temperatures
Su02 Properties of distilled water 2: Changes of temperatures during heating ..  ..Su03 Separation of mixtures 1:Sedimentation and pouring off the sediment
Su04 Separation of mixtures 2: Components of Cola and distillation
Su05 Separation of mixtures 3: Chromatography of black ink
Su06 Some substances are malleable others are brittle
Su07 Some substances are conductors for electricity others are insulators
Su08 Melting and solidification of sulfur.
Su09  More about melting and solidification: Viscous and plastic sulfur
Su10 Models of sulfur molecules at different temperatures
.Su11 Foamed polystyrene: A mixture of few polystyrene and a lot of air
Su12 Density of a gold piece: Is it a pure substance?
Su13Detect contaminations in this gold piece by corrosive acids
Su14 Separation of a mixture: Sodium chloride from cooking salt