Mendeleev
He occasionally left blanks & ignored atomic mass in order to place elements into groups with similar properties
Can be drawn into a wire
What is ductile?
Bond between metal and nonmetal
Ionic
What category of elements are semiconductors?
Nonconductors?
Metalloids/semimetals
Nonmetals
The number of valence electrons for group 13 is...
What is 3
Mendeleev arranged elements by...
What is atomic mass
Can be hammered into shapes/sheets?
What is malleable
Bond between nonmetals
Covalent
What are the three main categories of elements?
Metals, semimetals, nonmetals
Which group has a full octet?
When was Mendeleev's chart accepted
What are four properties of metals?
Luster
Good conductor of heat & electricity
Malleable
Ductile
What happens to electrons during ionic bonding?
Transferred
The two names of vertical columns on the periodic table
Why are the Noble gases called Noble?
They do not react with other elements
How was learning the properties of elements different before Mendeleev's chart?
Had to memorize the of each element instead of by groups
What are the names for horizontal rows on the periodic table called?
Periods
What happens to electrons during covalent bonding?
Strongly shared (because they both have octets)
What is the name of the chart that Mendeleev made?
Peridic table
Most metals are ____ at room temperature?
Solids
What attribute of God is reflected in Mendeleev's chart?
His orderliness
What is a mixture/solution of metals called?
Alloy
The statement that elements tend to gain, lose, or share electrons in order to have 8 valence electrons
What is the octet rule?
Elements in the same family have the same (give to answers)
Groups/families
Elements in the same family have the same what(give two answers?
Valence electrons and chemical properties