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actinide series

part of the transition metals
bottom row of pull-out
mostly synthetic
F block

alkali metals

grp 1
1 valence e-
+1 charge
S block

alkaline earth metals

grp 2
2 valence e-
+2 charge
S block


compound with same chemical make-up but different geometric crystal shapes
ie: diamond, coal, graohite


dissolved in water


atomic mass

mass of 1 mole of element

atomic number

# protons in nucleus

atomic radius

distance from center of nucleus to outer edge of electron cloud

periodic property

atomic symbol

element symbol on periodic table


easily breaks

charge/ oxidation #

# electrons that an element gives away or steals
(-) steals e- or (+) gives e-

chemical change

A change in matter that produces one or more new substances

chemical formula

A combination of chemical symbols and numbers to represent a substance

chemical symbol

one or two letter representation of an element


A substance made up of atoms of two or more different elements joined by chemical bonds


A material that conducts heat and electricity well


physical property
mass divided by volume


Containing only two atoms.


pull of electrons

periodic property


A pure substance made of only one kind of atom


columns going up and down the periodic table
also called: group


columns going up and down the periodic table
also called: family


grp 17
7 valence e-
-1 charge
P block


stable and unreactive


A charged atom

ionization energy

the energy required to remove an electron from an atom

periodic property

lanthanide series

part of the transition metals
top row of pull-out
F block

Law of Conservation of Mass

Matter cannot be created or destroyed, just rearranged


capable of being shaped

melting point

The temperature at which a solid becomes a liquid


Elements touching the staircase

elements with a mixture of metallic and nonmetallic properties


elements on the left side of the periodic table


elements on the right corner of the periodic table

noble gases

grp 18
inert family


contains carbon


recurring pattern


rows going across the periodic table

transition metals

grp 3-12
usually 2, 3, or 4 valence e-
usually +2, +3, or +4 charge
D block

phase change

a change in the state of matter
ie freeze, evaporation, sublimination

physical Properties

A characteristic of a pure substance that can be observed without changing it into another substance.


The breakdown or decay of a element, releasing harmful particles and energy


ionic compound

metal bonded to a mon-metal


metalloids are often _____ that will only conduct electricity under certain conditions.


dissolves in water



discoloration of metal surface caused by oxidation


prefix meaning 4

Boron Group

grp 13
3 valence e-
+3 charge
P block

Carbon Group

grp 14
4 valence e-
M +4/ NM -4 charge
P block

Nitrogen Group

grp 15
5 valence e-
-3 charge
P block

Oxygen Group

also called Chalcogen
grp 16
6 valence e-
-2 charge
P block


a metal that can be easily pulled into wires

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