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15 Cards in this Set

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How did Mendeleev orignally arrange the table in the early 1900's?
by atomic mass
the ____ of an element is the average mass of one atom.
amu
List each
particles mass, charge, and location
proton, 1amu, +, nucleus

nuetron, 1amu, 0, nuecleus

electron, 1/2000, -, electron cloud
The atomic number of an atom tells you the number of _______ in the atom.
protons
The nuetroms of an individual atom can be found by subtracting the _____ from the ______
the protrons from the atomic mass
How do i relate periods to energy levels?
each period represents 1 energy level---> one "ring"
what is in an element key?
Make example of iron
26 ------atomic number
Fe ------symbol
iron-----name
55.847---atomic mass
Electrons out in the furthest enerygy level can be transferred or shaperd and are known as _______
velence electrons
Difference between metals and non-metals
(5)
Metals_
shiney, bendable, ductile, good conductor, takes electrons

Non-Metals_
*ALL OPPOSITE OF METAL*
the _____ is the large group that share characteristics of both metals and non-metals
transition metals
This group of elements is a group of gases that have full outer energy kevels that don't ordinarly form compounds and they are known as ________
noble gases
Describe the location of the metals, non-metals, and metalloids on the periodic table of elements
Metals:left and center

Non-MEtals:right

Metalloids:around "staircase"
IN the _____ state of matter, atoms are stripped of their electrion
plasma
The suns is made of mostly _____. A _____ is a tremendous elxplostion that breaks apart a massive star, producing temp. up to one million degrees C
hydrogen, supernova
An atom with a differnt number of neutrons than protons
Isotope