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Where this fits
Atoms are consisted of ....
nucleus surrounded by one or more electrons
The nucleus is made up of
protons and neutrons
The atomic number is
the number of protons in an atom's nucleus
Isotopes are
atoms with the same number of protons and a different number of neutrons
Mass number is
the sum of protons and neutrons in the nucleus of an atom
He created the first period table of elements based on the properties of elements
Dmitri Mendeleev
The periodic table is arranged
according to the atomic number of elements
What is the atomic mass?
the average mass of all the isotopes of that element
One or two letter abbreviation of an elements name is called what ...
Chemical symbol
The properties of an element can be predicted based on what?
It's location on the periodic table
Horizontal rows arranged in a pattern according to the properties of the elements
Periods
Also known as families
Groups
Vertical columns where elements are grouped with similar characteristics
Groups
Can be hammered or rolled into flat sheets and other shapes
Malleable
Can be pulled out or drawn into a long wire
Ductile
Ability to transfer heat or electricity to another object
Conductivity
The ease and speed with which an element combines or reacts with other elements and compounds
Reactivity
The destruction of metal due to chemical reaction (rusting)
Corrosion
An element that lacks most of the properties of a metal
Nonmetal
Poor conductors of electricity and heat; reactive with other elements; dull and brittle
Properties of nonmetals
Carbon, nitrogen, oxygen, halogen, nobles gases, and hydrogen are....
Families of nonmetals
What is the least reactive of the nonmetals?
Noble gases
What are elements that have properties of both metals and nonmetals?
Metalloids
Solids at room temperature, brittle, hard, and somewhat reactive
Properties of Metalloids
Metalloids most useful property is its ability to
conduct electricity