Zusammenfassung der Ressource
Chemistry
- Physical and chemical changes
- Physical change is like water turning into ice
- Chemical change is the
breakdown of chemical bonds.
this cant be reversable.
- Chromatagraphy is a way seperating mixtures
of liquid to see how quickly they become a
solvent
- Limestone
- It is used for neutrallsing acid
soils, glass, bread, iron
- the average house has got 50 tones of limestone in it
- The chemical name for it is Caco3
- Limestone is an alkali