Practice Test 1

F to C

F - 30 =? |. ?/2 = answer

K to C

k - 273.15

F degrees

C x 9/5 + 32

Kelvin

C + 273.15

Diatomic Molecule

A molecule composed of 2 atoms

Molar Mass

mass(g)/ relative mass (how many atoms totaled up) = answer

1 mol =

6.022 × 10 ²³

Moles to Atoms

given mol x avo #/ 1 mol = answer

Empiracal formula

grams x 1mol/ mass = ? then divide by lowest number and turn into formula

mass % comp

Mass of element / mass of whole sample x 100

finding moles

mass/ molar mass

What is a covalent bond

a chemical bond in which two nonmetals atoms share one or more pairs of electrons to achieve stable configuration

What is an ionic bond

a chemical bond that results from electrostatic attraction between oppositely charged ions

How can you tell if its nonmetal

staircase on periodic, from on top of B to At