The solubility of solid substances generally increase as temperature increases. The solubility of gaseous substances generally decrease as temperature increases.
Physical changes are changes affecting the form of a chemical substance, but not it's chemical composition.
Chargaff's rules state that DNA from any cell of any organisms should have a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.
rxns is an abbreviation for reactions
