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periodic tbl perfect

periodic table organization and facts

What direction is the periodic table read? Left to right
What are inert gases also called? noble gases
Periods run which direction? horizontally
Groups run which direction? vertically
Another name for groups are ___________. families
Group 1 is also called _____________ _______. Alkali metals
Group 2 is called _____________ __________________ __________________. Alkaline earth metals
The atomic number is located at the ________ of the squares. top
Atomic number stands for number of _______________. protons
Atomic mass or mass number stands for ____________ plus ______________. protons neutrons
Atomic mass is located at the ______________ of the square. bottom
The periods have the same number of __________________ ____________________. energy levels
The groups have the same number of ______________ __________________. valence electrons
Which elements are located below the rest of the periodic table? actinides and lanthanides
Each element has its own _______________ which represents it. symbol
Most elements are __________________. metals
The non-metals are located on the _____________ side of the table. right
The metals are located on the ____________ side of the periodic table. left
Most of the periodic table is made of _________________. metals
If an element has properties of both metals and non-metals, then it is a ______________. metalloid
The metalloids are located on the ______________________ of the periodic table. zig-zag
Most of the elements are made in _____________. nature
________________ are pure substances that cannot be broken down into simpler parts. Elements
When 2 elements combine chemically with bonds, it is called a _______________. compound
The 1st energy level holds up to ________ electrons. two (2)
The 2nd energy level holds up to ___________ electrons. eight (8)
The 3rd energy level holds up to _________ electrons. eighteen (18)
The electrons in the outermost energy level are called ____________ _______________. Valence electrons
Created by: gstallcup