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51 terms

Periodic Table Vocabulary

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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
allotropes
compound with same chemical make-up but different geometric crystal shapes
ie: diamond, coal, graohite
aqueous
dissolved in water

soluble
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
brittle
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
compound
A substance made up of atoms of two or more different elements joined by chemical bonds
conductor
A material that conducts heat and electricity well
density
physical property
mass divided by volume
diatomic
Containing only two atoms.
electronegativity
pull of electrons

periodic property
element
A pure substance made of only one kind of atom
family
columns going up and down the periodic table
also called: group
group
columns going up and down the periodic table
also called: family
halogens
grp 17
7 valence e-
-1 charge
P block
inert
stable and unreactive
ion
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
malleable
capable of being shaped
melting point
The temperature at which a solid becomes a liquid
metalloids
Elements touching the staircase

elements with a mixture of metallic and nonmetallic properties
metals
elements on the left side of the periodic table
non-metals
elements on the right corner of the periodic table
noble gases
grp 18
inert family
organic
contains carbon
periodic
recurring pattern
period
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.
radioactive
The breakdown or decay of a element, releasing harmful particles and energy
salt
ionic compound

metal bonded to a mon-metal
semi-conductors
metalloids are often _____ that will only conduct electricity under certain conditions.
soluble
dissolves in water

aqueous
tarnish
discoloration of metal surface caused by oxidation
tetra-
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
ductile
a metal that can be easily pulled into wires