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Physical Sci Vocab

TermDefinition
matter anything that has mass and takes up space
state of mater any of the four physical forms of matter
solid state of matter with a definite shape and volume
liquid state of matter with a definite volume but no definite shape
gas state of matter that has no definite shape of volume
physical change change that does not produce a new substance
chemical change change that produces new substances
freezing change from a liquid to a solid
melting change from a solid to a liquid
evaporation change from a liquid to a gas at the surface of a liquid
condesation change from a gas to a liquid
sublimation change from a solid directly to a gas
deposition change from a gas directly to a solid
displacement method a procedure used to measure the volume of an irregularly shaped object by placing it in a known amount of water
density a physical property relating the amount of matter in a substance to the volume of the substance
relative density the comparison of one material as it relates to another (usually water)
density formula density = mass/volume (d=m/v)
mass the amount of matter in an object
volume the amount of space an object takes up
element substance that cannot be chemically broken down into simpler substances
atom the smallest part of an element that can be identified as that element
nuclues center (or core) of an atom
proton particle that has a positive charge and a mass of 1 amu
neutron particle that has no charge and a mass of 1 amu
electron particle that has a negative charge and an extremely small mass
atomic number number of protons in the nucleus of an atom
atomic mass average mass of all of the isotopes of an element
mass number number of protons and neutrons in an atom
energy level place in electron cloud where an electron is most like to be found
isotope atom of an element with the same number of protons as the other atoms but a different number of neutrons
chemical symbol shortened way of writing the name of an element
periodic repeating pattern
group vertical column of elements in the periodic table
period horizontal row of elements in the periodic table
metal element that has the properties of shiny, luster, ductility, and malleablity
malleable able to be hammered into different shapes
ductile able to be drawn into thin wires
nonmetal element that lacks most of the properties of a metal
halogens elements that make up Group 17 in the periodic table
Noble Gases elements that make up Group in the periodic table
Created by: angelaheath