Chemistry exam 1

NH₄⁺

ammonium

CH₃CO₂^-

acetate

CN^-

cyanide

HCO₃^-

bicarbonate

CO₃^2-

carbonate

C₂O₄^2-

oxalate

CrO₄^2-

chromate

Cr₂O₇^2-

dichromate

Hg₂²⁺

Mercury

MnO₄^-

permanganate

NO₂^-

nitrite

NO₃^-

nitrate

OH^-

hydroxide

O₂^2-

peroxide

H₂PO₄^-

dihydrogen phosphate

HPO₄^2-

hydrogen phosphate

PO₄^3-

phosphate

SO₃^2-

sulfite

HSO₄^-

bisulfate

SO_4^2-

sulfate

BrO^-

hypobromite

hypo-

1

-ite

1 or 2

-ate

3 or 4

per-

4

ClO₄^-

perchlorate

IO₃^-

iodate

ampere

SI unit of electric current

candela

SI unit of luminous intensity

1 km =

10³ m

1 cm =

10 ^-2 m

1 mm =

10^-3 m

1 g =

10^-3 kg

1 kg is about

2.2 lbs

1 (g/) cm³ =

1 (g/)mL

volume =

edge length cubed

measurements in a graduated cylinder are taker from the

bottom of the meniscus

zeros before numbers are,

not significant

leading zeros are,

never significant

trailing zeros are,

ambiguous without a decimal point

when rounding, if the dropped number is 5 (followed by zeros),

round however makes the last digit even

when rounding, if the last digit is 5 followed by non zeros,

round last digit up by one

percise

similar

accurate

close to truth

speed =

distance/time

dimensional analysis/factor label method

units undergo the same calculations as their associated numbers

K=

C+273.15

F=

9/5(C) +32

a meter is roughly

3 feet

a gram is roughly

the weight of a dollar bill