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Woodruff- Phases

Woodruff- Phases and Physical States of Matter

QuestionAnswer
four states of matter solid, liquid, gas, plasma
kinetic molecular theory all matter is made of particles (usually molecules) that are in constant motion
As temperature of substance increases, the kinetic energy of particles ________. increases
As the temperature of a substance decreases, the kinetic energy of particles ________ decreases
Five characteristics that classify a substance as a solid definite shape, definite volume, particles are close together, does not flow, diffusion is extremely low
Solids can be classified as _______ or ______ solids amorphous or crystalline
Crystalline solids particles are arranged in a regular repeating three-dimensional pattern
amorphous solids lack a regular repeating order, examples glass and wax
Four characteristics that classify a substance as a liquid takes shape or portion of container it occupies, definite volume, particles are farther apart than a solid, particles move faster than a solid
Six characteristics of a gas no definite volume or shape, particles are farther apart than a solid or liquid, particles move faster than a solid or liquid, particles are compressible, and have rapid diffusion due to high energy state
Physical property characteristic of a substance which may be observed without changing the chemical composition of the substance
state or phase solid, liquid, gas or plasma
color the way an object absorbs or reflects light
density ratio of mass to volume, D= m/v
specific gravity ratio of density to density of water (1.0)
solubility the ability of a substance to dissolve in a solvent
luster the silvery shine of a substance, many metals
malleability the ability of a substance to rolled or pounded into shapes
ductility the ability to be drawn into rods or wires
tenacity the ability of a substance to resist being pulled apart
brittleness the ability to shatter when struck
conductivity the ability to transfer electricity of heat
odor produced by vapor particles being given off by an object
elasticity the ability of an object to stretch and return to its original position
hardness the resistance to being scratched
melting and freezing point same temperature for given substance
boiling and condensation point same temperature for given substance
physical change a change in which the appearance of matter changes but its properties and makeup remain the same
Three examples of physical change cutting wood, melting ice, breaking glass
phase change a change caused by increased or decreased heat energy making particles move close and further apart
When will a phase change occur? when sufficient heat energy is gained or lost
An increase or decrease in heat content ( does or does not) necessarily mean an increase or decrease in temperature does not
If no phase change occurs when heat is absorbed or released a ____ will occur temperature change
When heat energy is absorbed or released by a substance one of these occurs phase change or temperature change
melting point temperature at which a solid turns to liquid
freezing point temperature at which a liquid turns into a solid
boiling point temperature at which a substance rapidly changes from a liquid to a gas at that atmospheric pressure
condensation a change from gaseous state to q liquid state occurs at the same temperature as the boiling point
when a substance condenses, heat energy is _____ released
when can a substance exist as a gas and a liquid at the same temperature Yes, at the transition temperature
evaporation change from liquid to gas
two factors that affect the rate of evaporation temperature and surface area
Why is evaporation a cooling process? it takes heat away from surroundings
sublimation direct change of sate from solid to gas or gas to solid
Name two solids that sublime moth balls and dry ice
Created by: seagullq
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