JMU Chem 131 Quiz 1

1 kg

1000g

1mL

1cm^3

Mass number

# of protons + # of neutrons

Noble gases

Group 18, Isolated atoms

Molecular Diatomic Atoms

BrINClHOF

Polyatomic molecules

P4, S8

Ionic v. Covalent compounds

Metal and Non-Metal v. only Non-Metals

How to remember -ate Ions

Nick the Camel ate a Clam for Supper in Phoenix

NaNO3

sodium nitrate

Ions v. Formula

Ions have charges and swap to make the formula

Sulfate

SO4 2-

Nitrate

NO3-

Carbonate

CO3 2-

Chlorate

ClO3-

Phosphate

PO4 3-

All acids what?

Start with 'H' and are in water

ammonia

NH3

ammonium

NH4+

hypochlorous acid

HClO

chlorous acid

HClO2

Chloric Acid

HClO3

Perchloric Acid

HClO4

What two elements have same naming schemes?

Cl and Br... both Halogens

If 'hydro' in name acid doesn't have what?

Acid doesn't have any O

hydrochloric acid

HCl (HClO3 if remove Hydro)

Hydroxide

OH-

Cyanide

CN-

Sulfite

SO3 2-

Hydrogen peroxide

H2O2 (P. is OH-)

Ending -Ate to -Ite if what happens?

Take away one Oxygen

Acetate

C2H3O2- (CH3COO)-

Empirical Formula

a formula with the lowest whole-number ratio of elements in a compound

how to find empirical formula

Get percentages of each element, Divide by MM, divide everything by smallest #

molecular formula

Covalent Compound, tells total amount Non-reduced

-Ide ending -> Acid

Hydro...-Ic

-Ate ending -> Acid

-Ic

-Ite ending -> Acid

-Ous (bITE was poisonOUS)

Ionic Compound Formula

Need Ions (Have Charges) then balance to get the formula

Ionic Compound Naming

Get name from Ions (Have Charges)

g->mol do what with MM

divide by MM

mol->g do what with MM

multiply by MM