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Properties of Matter

Properties and changes of matter

TermDefinition
atom basic unit of matter
molecule two or more atoms joined by chemical bond
solid substance in which the particles are packed together and don't move much
liquid substance in which the particles are close together and in contact but move past each other
gas substance in which particles are far apart and don't stay in contact with each other
kinetic energy energy of motion
density the amount of mass in a given amount of space measured in a unit of mass per unit volume
pure substance a substance that consists of just one type of particle and is the same throughout
HOMOgeneous mixture a mixture made of substances so evenly mixed that it is difficult or impossible to see the individual substances
HETEROgeneous mixture mixture made of parts that are easily identified and can be separated
element substance that contains only one type of atom and connot be broken down into a simpiler form
periodic table a chart that organizes all known elements according to patterns in their properties
metal an element that is a good conductor of heat and electricity
luster shininess
malleability ability to be easily hammered and shaped
non-metal an element that is a poor conductor of heat and electricity
metalloid an element that has some metallic and nonmetallic properties
chemical change a change in matter that produces one or more new substances
thermal energy the kinetic energy of the particles in a substance
precipitate a solid sometimes formed when two liquids combine
property a characteristic or attribute of an element
Volume amount of space an object occupies
rare earth metal similar metallic elements (lanthanides and scandium/yttrium) that are not rare but occur in nature together and are hard to separate.
Created by: user-1991778
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