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chapter 3

chapter 3.1

TermDefinition
Matter makes up everything
elements there are over 100 of these things and they make up most things
semimetals it reacts like metals sometimes but is not one
atoms the smallest part of a element that still has the properties is a
GAS No definite volume or shape. Particles spread out evenly and take shape of container. Can be squeezed into a smaller volume
compound a is a type of matter made of two or more elements
molecule the smallest part of a compounds that still has the properties is called a
nonmetals does not react like metals
metals good conductors of electricity and heat and it cand bend
atomic theory states everything is made of atoms
molecule smallest part of a compound that still is one
proton positive charge found in the nucleus
nuetron no charge found in nucleus
electron negative charge orbits nucleus
SOLID Has a definite volume or shape. Particles are very close together, and don’t move past each other.  Keeps its shape.
LIQUID Has a definite volume but not shape. Particles can move past each other. Takes shape of container
PLASMA Like a gas, but conducts electricity like a metal.  Occurs with high temps or electric charge.
MELTING POINT Solid to liquid or liquid to solid.  Same temperature as freezing point.
EVAPORATION When liquids become a gas
CONDENSATION When gas becomes a liquid.  Gas particles touch a cold surface and the temperature drops.
BOILING POINT The temperature at which evaporation occurs
MIXTURE Two or substances that mix together but each keeps its own identity
SOLUTION A mixture where substance spreads out evenly and will not settle
SOLUTE The substance being dissolved
SOLVENT What the substance is dissolved in
SOLUBILITY A way to measure how much a material dissolves into another
Created by: oliver-hughes
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