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Chemistry/Physical S

Matter, Elements, Compounds, Mixtures, Density, Atoms, & Periodic Table

QuestionAnswer
Define Matter A substance that has mass and takes up space.
Define Pure Substance A substance made up of only one type of atom or one type of molecule.
Define Element A pure substance made up of one kind of atom that cannot be cannot be changed into a simpler substance. Ex. Hydrogen, Oxygen, & Carbon
Define Compound A pure substance made up of two or more different atoms that are chemically combined.
Define Mixture Made up of two or more different substances that retain their own individual properties and are physically mixed together.
Define Heterogeneous Mixture Type of mixture that is not uniformly throughout "not evenly mixed". The parts "components" can be easily seen and visibly distinguished "tell apart".
Define Homogeneous Mixture Type of mixture that is uniformly throughout "evenly mixed". The mixture cannot be visibly distinguished " cannot be easily seen". Also called a solution.
Define Mass The amount of matter an object contains. Mass in measured in grams.
Define Volume How much space an object takes up. Volume is measured in milliliters or cubic centimeters.
Define Density The mass of a substance per unit of volume.
Define Atom The basic unit of a chemical element made up of three subatomic particles.
Define Proton Positive charge atomic subatomic particle found in the nucleus of an atom.
Define Neutron No charge or neutral atomic subatomic particle found in the nucleus of an atom.
Define Electron Negative charge atomic subatomic particle found outside the nucleus of an atom.
Define Atom Nucleus Structure located in the center of an atom made up of protons and neutrons.
Define Periodic Table Table that provides information and organizes all the elements.
Define Atomic Number Found on the periodic table that is equal to the number of protons. Also a whole number.
Define Atomic Mass (Weight) Number Found on the periodic table that is the sum "total" number of protons and neutrons in the nucleus of an atom. Usually in decimal form.
Define Families (Groups) The vertical columns of elements on the periodic table numbered from 1 - 18.
Define Periods The horizonatal rows of elements on the periodic table numbered from 1 - 7.
Metals Periodic Table Location Found on left side of zigzag line on the periodic table. Hydrogen is on left side but is not a metal.
Nonmetals Periodic Table Location Found on right side of zigzag line on the periodic table.
Metalloids Have properties or characterisitcs of both metals and nonmetals. Found along "touching: the zigzag line. Aluminum touches the zigzag line but is a metal.
Hydrogen Symbol H
Carbon Symbol C
Nitrogen Symbol N
Oxygen Symbol O
Silicon Symbol Si
Copper Symbol Cu
Aluminum Symbol Al
Silver Symbol Ag
Magnesium Symbol Mg
Gold Symbol Au
Zinc Symbol Zn
Phosphorous Symbol P
Chlorine Symbol Cl
Iron Symbol Fe
Potassium Symbol K
Sodium Symbol Na
Iodine Symbol I
Sulfur Symbol S
Calcium Symbol Ca
Created by: Westview7G