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40 Cards in this Set

  • Front
  • Back
the smallest particle of an element
atom
A small particle in the nucleus of the atom, wiht no electrical charge
neutron
A small, postively charged particle in the nucleus of the atom
proton
A group of atoms that are joined togheter and act as a single unit.
Molecule
The measurment of how much matter it contains
mass
measured in kilograms
Anything that has mass and takes up space
matter
A measure of the force of gravity on you.
weight
The force that causes two masses to accelerate towards each other
gravity
gravity is the force that causes all thigs near the Earth to accelerate toward the center of the Earth
the amount of space that matter occupies
volume
measured in cubic centimeters, milliliters, liters, and other units
Relates the mass and volume of an object or material
density
g/cm3
A substance that cannot be broken down into other substances bu chemical or physical means.
Give example
element
ex- silver
A substance made of two or more elements that are chemically combined
give example
compound
ex- water and carbon dioxide
Two or more substances that are in the same place but are not chemically combined
mixture
ex- water, sugar, flavorings..added together
A very well-mixed mixture
Give example
solution
ex- cranbarry juice, sugarwater
A quality of a substance that never changes and can be used to identify the substance.
Give example
characteristic properties
ex-all diamonds have the same hardness
alters the form of a substance, but not its identiy
give example
physical change
ex- when you boil water, the water is still present but as water vapor instead of water
A change in which one or more substances combine or break apart to form new substances.
give example
chemical change
ex- heating table sugar unitl it changes to caramel
the total energy of a substance's particles due to their movement or vibration
thermal energy
A measure of the average energy of motion of the particles of a substance
temperature
A state of matter that has a definite volume and a definite shape
solid
A substance that is made up of crystals in which particles are arranged in a regular, repeating patern.
give example
crystalline solid
ex- snow, sugar
A solid made up of particles that are not arranged in a regular pattern
give example
amorphous solid
ex- plastic
A state of matter that has no definite shape but a definite volume
liquid
A state of matter with no definite shape or volume
gas
Any substance that can flow
fluid
The resistance of a liquid to flowing
viscosity
low viscosity fluid flows _____
fast
high viscosity fluid flows ______
slow
The change in state from a solid to a liquid
melting
when is the melting point of water?
0 degrees C
The change of state from liquid to solid-just the reverse of melting
freezing
what is the freezing point of water?
32 degrees f
The change of state from a liquid to a gas
vaporization
The proces that occurs when vaporizatioin takes place only on the surface of a liquid.
evaporation
The proces that ocurs when vaporization takes place inside a liquid as well as on the surface.
boiling
The temperature at which a substance changes from a liquid to a gas
boiling point
the change of state from a gas to a liquid
give example
condenstation
ex: clouds typically form when water vapor in the atmosphere condense into liquid droplets
The change in state from a solid directly to a gas without passing through the liquid state.
give example
sublimation
ex: the change that dry ice undergoes
How do you calculate the volume of a block?
length x width x height
How do you find the density of a block?
Mass
______
volume