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Atoms and Periodic Table
Flash Cards for HHS Int Sci
52
Other
Not Applicable
11/15/2004

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Cards

Term
Atom
Definition
Smallest particle of a substance that retains the properties of that substance
Term
Subatomic particles
Definition
Protons, neutrons, and electrons
Term
Nucleus
Definition
Positively charged center of the atom, contains protons and neutrons
Term
Electron cloud
Definition
Area around the nucleus, probable location of electrons
Term
Ion
Definition
Atom that has gained or lost electrons
Term
Anion
Definition
Negatively charged ion
Term
Cation
Definition
Positively charged ion
Term
Types of elements
Definition
Metals, nonmetals, metalloids, synthetic
Term
Chemical symbol
Definition
Shorthand way to write the element's name
Term
Atomic number
Definition
Number of protons in the nucleus of an atom
Term
Average atomic mass
Definition
Mass of one atom of an element, equal to the protons plus neutrons for that element
Term
Isotopes
Definition
Atoms of the same element that have different numbers of neutrons
Term
Metals
Definition
Located to the left of the stair step line, good conductors of heat and electricity, shiny, malleable, and ductile
Term
Nonmetals
Definition
Located to the right of the stair step line, do not conduct heat or electricity, brittle
Term
Metalloids
Definition
Located on either side of the stair step line, have properties of metals and nonmetals, used as semiconductors
Term
Groups or families
Definition
Columns of the periodic table, share similar properties
Term
Periods
Definition
Rows on the periodic table
Term
Alkali metals
Definition
Group 1 on the periodic table, very reactive and not found in nature in pure form
Term
Alkaline earth metals
Definition
Group 2 on the periodic table, very reactive and not found in nature in pure form
Term
Transition metals
Definition
Groups 3 - 12 on the periodic table
Term
Halogens
Definition
Group 17 on the periodic table, form salts with group 1 elements
Term
Noble gases
Definition
Group 18 on the periodic table, unreactive and not found in compounds
Term
Ionic compounds
Definition
A metal combined with a nonmetal, electrons are transferred from one element to another
Term
Covalent compound
Definition
A nonmetal combined with another nonmetal, electrons are shared
Term
Metallic compounds
Definition
A metal combined with another metal
Term
Malleable
Definition
Can be hammered into a thin sheet
Term
Ductile
Definition
Can be drawn into a thin wire
Term
H
Definition
Hydrogen
Term
He
Definition
Helium
Term
O
Definition
Oxygen
Term
N
Definition
Nitrogen
Term
Na
Definition
Sodium
Term
Mg
Definition
Magnesium
Term
Ca
Definition
Calcium
Term
K
Definition
Potassium
Term
Fe
Definition
Iron
Term
C
Definition
Carbon
Term
Al
Definition
Aluminum
Term
S
Definition
Sulfur
Term
Cl
Definition
Chlorine
Term
Cu
Definition
Copper
Term
Zn
Definition
Zinc
Term
Au
Definition
Gold
Term
Ag
Definition
Silver
Term
Ni
Definition
Nickel
Term
P
Definition
Phosphorus
Term
Ti
Definition
Titanium
Term
Ne
Definition
Neon
Term
Li
Definition
Lithium
Term
Si
Definition
Silicon
Term
Co
Definition
Cobalt
Term
Sn
Definition
Tin
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