Test three Flashcard

Hydrogen Bonding
effects on melting and boiling points; effects on solubility

Anions

 

(-)

elements/groups with high EN

 

Cation

(+)

elements/groups with low EN (electronegativity value)

PPM
mg solute/L H20
PPB
ug solute/L H20
Molarity

M=mol solute/L solution

grams=moles

Acids

produce hydronium ion (H3O+) when dissolved in aqueous solutions

 

Bases
produce hydroxide ion (OH-) when dissolved in aqueous solutions
Oxidation
a compound loses electron(s)
reduction
a compound gains electrons
Anode
where oxidation takes place
Cathode
where reduction takes place
Formulas for ionic compounds
no net charge (simple ions from periodic table)
Oxidation states/numbers
charge of ion or O takes electrons (1/bond)
Molarity of solution
Moles/Liter of solution
Acidic or basic

[H3O+] > [OH-] acidic

[H3O+]<[OH-] basic

Molecular shape of water
bent
What must happen to convert a liquid to a gas
energy must be put in to bresk hydrogen bonds and to speed up molecules
How ions form

an atom gains one or mopre electrons to become negatively charged

an atom loses one or more electrons to become positively charged

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