http://sundekantiner.dk/bioret/93 In this unit students will learn:
follow site 1. What an atom is
go to site 2. What a molecule is
click here 3. The difference between an element and a compound
source 4. Meaning of the words reactant and product
rencontre à wicker park ba vf 5. Chemical reactions caused by heating
see url 7. Air as a mixture and its separation.
8. The effect of impurities on the melting point and boiling point of substances.