equations

Kelvin to Celsius

C + 273.15

Celcius to Fareinheight

(1.8)(C)+32

cal to joules

1 —> 4.184

kcal to kjoules

1> 4.184

specific heat

calories / (grams x celcius)

heat (cal)

(mass)(Temp change)(Specific Heat)

inch > cm

1 > 0.3937

earth gravity

9.8 m/s²

cubic meters > liters

1 > 1000

km > miles

1 > 9.6214

miles > km

1 > 1.60934

liters > quarts

1 > 1.05669

quarts > liter

kg > lbs

1 > 2.205

meters > feet

1 > 3.280

cubic meter > gal

1 > 264.2

ton > pounds

1 > 2000

ton > kg

1 > 907.03

pound > ounce

1 > 16

specific gravity

density of substance/ density of water at same temp

atomic theory (4)

• All matter is composed of atoms.

• Atoms of any given element share the same chemical properties while atoms of different elements have different properties.

• Chemical compounds consist of atoms combined in specific ratios. That is, only whole atoms can combine.

• Chemical reactions change only the way that atoms are combined in compounds. The atoms themselves are unchanged and do not disappear.

proton and neutron mass

1.672622 × 10^-24

amu > grams

1 > 1.660539 × 10^-24

The most common element by mass percent in the human body is

oxygen

most abundant in earth

silicon

most abundant hydrogen isotope

PROTIUM - no neutrons

deuterium

1 neutron

tritium

2 neutrons

Atomic weight

sum of (isotopic abundance x isotopic mass)