Symbols & Names
Organization of the table
History of the PTOE
Element Uses
Vocabulary
100
What is the symbol for Hydrogen ?
H
100
The elements are in order by their _____?
Atomic number
100
The first element discovered was _____?
Phosphorous
100
____ is used in weather balloons.
Helium
100
What are the rows on the periodic table called?
Periods
200
What is the symbol for gold?
Au
200
Elements in the same row have _____ in common?
Atomic orbitals
200
How many elements on the periodic table occur in nature?
90
200
____ is what we use to breath.
Oxygen
200
What are the columns called on the periodic table called?
Groups
300
What is the symbol for Cobalt?
Co
300
What group is the noble gases?
Group 18.
300
Who is often considered the ''father'' of the periodic table?
Dmitri Mendeleev
300
___ kills germs in a swimming pool
Chlorine
300
A region in an atom where there is a high probability of finding electrons is known as a(n) ____ ?
Orbital
400
What is the symbol Ra stand for?
Radium
400
The thick zigzag line separates what?
Metals and nonmeteals
400
What was the first element to be made artificially?
Technetium
400
_____ is used to kill small germs in cuts.
Iodine
400
The atomic number is know as _____?
The number of protons in the nucleus of an atom
500
What does the symbol Yb stand for?
Ytterbium
500
Group 2 contains what metals?
Alkaline-Earth Metals.
500
Who was the person to discover the first element?
Hennig Brand
500
____ is used to make electrical wires
Copper
500
The total number of protons and neutrons in the nucleus of an atom is the what?
Mass number
M
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