Periodic table history
What Scientist is credited with making the first working periodic table?
Mendeleev
What is the name of a row on the periodic table?
Period
How many valence electrons to elements in the Alkali Metals group have?
1
What is the proper term for the fact that metals are shiny?
Luster
What does the Lewis Dot structure look like for Bromine?
Br with seven dots
What Scientist showed how Triads work?
Dobereiner
What is the name for a column on the periodic table?
Group or Family
How many valence electrons do the Noble Gasses have?
8
What state are most non-metals in at room temperature?
Gas
What is another name for Lanthanides?
Rare Earth Metals
What did Meneleev use to order his periodic table?
Atomic Mass
How do we number the groups?
English numbers 1-18
What group has 2 valence electrons? Be specific with the family name.
Alkaline Earth Metals
The transition elements are what type of elements?
All are metals
How is the conductivity of semiconductors changed?
By adding several different pure metals to make it conduct more electricity
Mendeleev used the Periodicity as part of his design. What does Periodicity mean?
Periodicity is the tendency to recur at regular intervals. The elements have properties that re occur at specific intervals.
How do we number the periods?
Roman Numerals
What group wants to bond with elements in group 7?
Group One
What is a semiconductor and what kind of elements make these?
Something that can conduct electricity but no super well. Metalloids are semiconductors.
When we combine n-type and p-type semiconductors what do we create?
Diode
What scientist rearranges the periodic table to be ordered by atomic number?
Moseley
What information is included in each cell on the periodic table?
Atomic name
Atomic number
Atomic Symbol
Atomic mass
What group wants to bond with elements in group 6
Group 2
Describe how each group treats their valence electrons.
Metals: Loosely held
Metalloids: Kind of held but able to move.
Nonmetals: Tightly Held
What trait do all actinides share?
Radioactive