Study for quiz

Direct proportionality = whatever you do to one side you do the same to the other side. (eg. Hours times wage)
Proportionality symbol = <><
Points on graph = (2,10) (6,30) slope = (30-10) / (6-2) = 5

Inverse proportionality = as one number is multiplied by a number, the other number is divided by that number.

People Time
1
24 24*1=24)
2
12 (12*2=24)
3
8 (8*3=24)

Time = K/people where K is constant

0.000378 = 3.78 *10 (-4)

(1.2*10 (3) ) * (4*10 (11) ) = (1.2 * 4) * ( 10 (3) * 10 (11) )

(3.75 * 10(5) ) / (1.25 * 10(8) ) = (3.75 / 1.25) * (10(5) / 10(8) )

Deci = .2
Centi = .02
Milli = .002
Kilo = 2000Mega = 2000000


In 1800 John Palton discovered that matter always combines in same weight ratio

1 ibs hydrogen = 8ibs Oxygen

Sodium 23 : chlorine 35

Robert Brown said that all atoms are moving in a random fashion = Brownian Motion
-Dust particles/pollen strains moved randomly under microscope
- Every atom wants to be distributed evenly

Einstien created an equation to fit Brownian motion

112- 116 different matters-but almost everything is made from 90 matters

Greek = Atom = something that cannot be split up anymore

Better Definition = Atom = smallest particle of one of the ELEMENTS that maintains the chemical and physical properties of that ELEMENT
Molecule = the smallest particle of a TYPE OF MATTER that maintains the chemical and physical properties of that TYPE OF MATTER

- H2 0 = 2 parts Hydrogen and 1 part oxygen = 1 molecule
- Nobility gases don’t mix with anything else
- Molecule Nitrogen = N2 = Not useful until broken by plants(?)

Liquids and solids have constant volume while gas has a variable Volume

Gas and liquids have variable shapes while solids have constant shapes

Solids and liquids are non compressible while gas is compressible

Solids stay in same location to themselves while gas and liquids are free to move about (gas actually moves more though)

Solid Liquid Gas

-----------------------------à Increase temperature/increase movement

If you compress gas, becomes liquid. Once released, turns back into gas.

Humans are carbon based beings


1 Combustion Produces Heat

2 Respiration Produced BY aminals
(opposites)3 Photosynthesis Produced by plants

Atom =
Electrons - outer rim
Nucleus - inner rim
Protons - inside inner rim - Charge
Nutrons - Inside inner rim - No charge