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Physical Science Study cards
Study cards for physical science
20
Science
9th Grade
11/11/2010

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Cards

Term
Diffusion
Definition
spreading to fill container
Term
Heat of Fusion
Definition
heat needed to melt a solid
Term
Heat of Vaporization
Definition
heat needed to vaporize a liquid
Term
Thermal Expansion
Definition
a substance grows in size when heated
Term
Contraction
Definition
a substance shrinks in size when cooled
Term
Amorphous solid
Definition
glass, plastics, gradually melts (no definite point) no crystal structure like other solids
Term
Liquid Crystals
Definition
calculations, watches when melts, do not lose their geometric order completely
Term
Kinetic Molecular Theory
Definition
1. All matter is made of small particles
2. These particles are in constant, random motion
3. These particles collide with each other and the walls of the container
Term
Six Phase Changes
Definition
1. Melting - S -> L endo
2. Freezing - L -> S exo
3. deposition - G -> S endo
4. Boiling - L -> G Exo
5. Sublimation - S -> G Endo
6. Condensation - G -> L Exo
Term
4 reasons water is unusual
Definition
1. Expands when cool - other substances shrink
2. Creates holes in structure when freezes - other substances pack closer
3. Solid State is less dense than liquid - other substances get more dense
4. Solid water (ice) floats on liquid water - other substances shrink
Term
Viscosity
Definition
Resistance of a liquid to flow
Term
Relationship between temp. and visco.
Definition
The higher the temp., the lower the visc., and the lower the temp., the higher the visc.
Term
Cause of pressure
Definition
Caused by the collisions of gas particles
Term
Measure of Pressure
Definition
Pascals (Pa)
Term
Three factors of gas sample
Definition
1. Volume of container
2. Temperature
3. Number of particles
Term
Factors related in Boyle's Law
Definition
Pressure & Volume
Term
Relationship between factors in Boyle's Law
Definition
Volume increases causes pressure decrease, volume decrease causes pressure increase
Term
Factors related in Charles' Law
Definition
Volume & Temp.
Term
Relationship between factors in Charles' Law
Definition
Temp. increase causes Vol. increase, Temp. decrease causes Vol. decrease
Term
Factors related in Combined Law
Definition
Pressure, Volume, Temp.
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