Element Basics
This number tells you how many protons an element has.
what is the atomic number
Elements in the same vertical column belong to this.
what is a family/group?
These elements are shiny, malleable, and good conductors of heat and electricity.
what are metals?
The symbol for sodium.
What is Na?
He created the first widely accepted periodic table in 1869.
Who is Dmitri Mendeleev?
This term describes a pure substance made of only one type of atom.
what is an element
Group 17 elements are known by this family name.
What are the halogens?
These elements are dull, brittle, and poor conductors.
what are nonmetals?
The name of the element with the symbol Fe.
What is iron?
Today's periodic table is organized by increasing this.
What is atomic number?
This part of a periodic table square shows the element’s mass.
what is atomic mass/weight?
These gases in Group 18 are extremely nonreactive.
what are the noble gasses?
These “metal-like” elements have properties of both metals and nonmetals.
what are metalloids?
The symbol for tungsten, which does not match its English name.
What is W?
Mendeleev left these in his table because he predicted undiscovered elements.
What are blank spaces?
This element has the symbol O.
What is oxygen?
This family includes elements like Li, Na, and K, which react violently with water.
what are the alkali metals?
This is the only metal that is a liquid at room temperature.
What is mercury (Hg)?
This element has the symbol Xe.
What is xenon?
The periodic table can be used to predict these properties of elements.
What are physical and chemical properties?
This element is the only one in Group 1 that is not considered an alkali metal.
what is hydrogen?
These two rows at the bottom of the periodic table include mostly synthetic elements.
What are the lanthanides and actinides?
This metalloid is used in computer chips because it conducts electricity better than nonmetals but not as well as metals.
what is silicon?
This element’s Latin name explains why its symbol is Pb.
What is lead?
These horizontal rows on the periodic table indicate repeating patterns of properties.
what are periods?