Periodic Table
Elements
Groups
Vocabulary
Atoms
100
Elements in vertical columns that share chemical and physical properties
What are groups or families?
100
The most common element in Group 13 - the Boron Group
What is aluminium?
100
Elements in this group are very reactive metals with 1 electron in the outer shell.
What is an alkali metal?
100
Happening at regular intervals
What is periodic?
100
The center of an atom
What is the nucleus?
200
Elements such as chlorine and fluorine, in Group 17 of the periodic table
What are the halogens?
200
An element necessary for something to burn
What is oxygen?
200
They are less reactive than alkaline-earth metals and are good conductors of thermal energy
What is a transition metal?
200
These are good conductors of heat and thermal eneregy
What are metals?
200
A negatively charged sub atomic particle
What is an electron?
300
Horizontal rows in the periodic table
What are periods?
300
This makes up about 80% of the air we breathe?
What is nitrogen?
300
This element is a liquid at room temperature and is used in thermometers
What is mercury?
300
Can be flattened with a hammer and will not shatter
What is malleable?
300
A very massive subatomic particle with no charge
What is a neutron?
400
In 1914, this British scientist determined the number of protons - the atomic number - in an atom
Who is Henry Moseley?
400
Made in a laboratory, this element is used in smoke detectors
What is americium?
400
Silicon, Germanium, Tin and Carbon
What is the carbon group?
400
Nonmetals that are unreactive
What are noble gases?
400
A proton
What is a massive subatomic particle that has a positive charge?
500
The full name of the Russian scientist we credit with the organization of the periodic table as we use it today
Who is Dmitri Mendeleev?
500
Diamond and soot are forms of these
What is carbon?
500
Metals in Group 3 - 12 that do not give away their electrons as easily as atoms of Group 1 and 2
What are transition metals?
500
properties of elements change periodically with the elements' atomic numbers
What is periodic law?
500
The nucleus of an atom is surrounded by this
What is mostly empty space or an electron cloud?
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