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41 Cards in this Set

  • Front
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Avogadro's number
6 * 10 (23) particles per moles
Mole
a mole is the mass of a single atom multiplied by avogadro's number
molar mass
= atomic mass * avogadro's number
see fig 10.9
number of electrons are equal to number of protons
F of gravity break down
f = m1 *m2
F = 1/d(2)
F= m1*m2/ d(2)
F= (G *m1 *m2)/ d(2)
momentum=
M*V*R
I=
M*R(2)
apohelion
away from the sun
perihelion
close to the sun going as fast as it can go
Area of the triangle
A= (1/2) B*H
mass of proton=
mass of hydrogen atom
mass of electron=
1/1835 mass of proton
mass of neutron=
mass of proton +mass of electron
proton
postive
electron
negative
neutron
no charge
water is a
compound
Compound=
two or more elements chemically
any compound has
the same simple whole number ration of the component atoms any where in the world
see diagram 10.7
page 187?
What is the mass of one molecular of water?
18
atomic number
identifies one elemenst number of protons in an atom
anti matter
anti proton and a proton with opposite charges create a great amount of energy
also an anti electron with positive charge and an electron with a negative charge will create a lot of energy
so an antimatter bomb would be 100times stronger than an atomic bomb
magnetic bottle can hold
antimatter because magnetics is a pure force
Density=
mass/volume
Elasticity
hooke's law- F= Change in X
Tension
stretched- pulled on
compression
pushed on
stress=
force
strain=
deformation
scaling-
If the length of a side is doubled, what happens to the area of a square? What happens to the volume of a cube?
properites of liquids
flow to shape of container
exerts pressure on walls of container
Pressure = force/ area = weigh density* depth
Pressure on dam wall is proportional to depth of lake, not the volume of water
Buoyancy - archimedes Principle
" An immersed body is buoyed up by a force equal to the weight of the fluid that it displaces."
Pascal's Principle
" A change in pressure at any point in an enclosed fluid at rest is transmitted undiminished to all points in the fluid."
Hydraulic press-
force on a small diameter piston exerts a much larger force on a large diameter piston- but TANSTAAFL- the small piston moves over a larger distance
Surface tension
contractive tendency of most liquids - cohesion
Capillary action
attraction between dissimilar substances -adhesion
4 phases of matter
solid, liquid, gas, plasma
elements
a pure chemical substance consisting of one type of atom
mixtures
2 or more substances mixed together