The boiling point of 100 milliliters of water at sea level, vapor pressure 760 mm hg is 100oc. if, under different conditions, t
he boiling point of the water is 98oc, what else changed? a.the vapor pressure decreased.
b.the vapor pressure increased.
c.the volume of water decreased.
d.the time needed to boil the water decreased.
If 100 milliliters of water boiled at 98oC then the vapor pressure decreased. The boiling point of water changes if we vary the vapor (atmospheric) pressure. If the pressure goes down, the boiling point drops. The opposite is also true: higher pressure means a higher boiling point.
The electrons that occupy the outermost shell of an atom are called valence electrons. Valence electrons are important because they determine how an atom will react. By writing an electron configuration, you'll be able to see how many electrons occupy the highest energy level .
Octet rule is a chemical rule that shows elements in main group bond so that each atom have 8 valence electrons in the outmost shell which make them to have similar electronic configuration with Noble gases This is important because the sharing of electrons make atoms to have full shell. Atoms with electrons not up to 8 react with more stable compound.
