Introduction of experiments
Cold and freezing
The formation of the star
Solid-liquid-gas
Liquid – viscous
Passing from solid to liquid and to gas
Passing from gaseous to liquid and to solid (parts a & b)
Mutual attraction and rejection
Mixture chemical combination of gas crystallization
Chemical reaction
Precipitation
Properties of solids, liquids and gases
Elastic – plastic – rigid
Substances change their state at different temperatures
The law of gravity (part a)
The law of gravity (part b)
The rapidity of cooling depends on the mass of the bodies
Volcano
Tectonic tension fractures
Matter expands when heated
Quick evaporation