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Vocabulary
The Periodic Table
Noble Gases
Alkali Metals
Other Nonmetals
100
Electrons that are highest in energy level and held most loosely.
What are valence electrons?
100
The symbol for Hydrogen.
What is H?
100
Belong to this group
What is group 18?
100
Alkali metals belong to this group.
What is Group 1?
100
Located in the green section of the periodic table.
What are nonmetals?
200
Usually consists of one or two letters.
What is a symbol?
200
The symbol for Neon.
What is Ne?
200
Most have this many valence electrons.
What is 8?
200
Most alkali metals have how many valence electrons?
What is one?
200
Give two examples of elements which are nonmetals.
What are Carbon, Phosphorous, Sulfur, Selenium, Iodine?
300
Elements in the same column.
What is a group?
300
True or False. Metals outnumber nonmetals in the periodic table.
True
300
True or False. These elements react easily with other elements.
False.
300
Alkali metals can become _________ stable by losing their one valence electron.
What is more stable?
300
The most reactive element known?
What is fluorine?
400
The number of protons in the nucleus of an atom.
What is atomic number?
400
Give the number of protons in the nucleus of Gold.
What is 196.97
400
Only has two valence electrons.
What is helium?
400
Alkali metals are _______ reactive.
What is very reactive?
400
Nonmetals combine with metals by _________ electrons.
What is gaining electrons?
500
A row of elements across the periodic table.
What is a period?
500
Identify the period and group of Cobalt.
What is period 6, group 9
500
The number of valence electrons required for an atom to become stable.
What is 8?
500
The element whose atoms have a stable set of two electrons in the energy level below the valence electron.
What is lithium?
500
True or False.Other nonmetals become stable when they gain or share enough electrons to have a set of eight valence electrons.
True.