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