Show:
Scientists
Metals
Nonmetals
Metalloids
Potpourri
100
This man arranged elements in groups of three.
Who is Johann Doberiener
100
This group contains the most reactive metals
What is group 1
100
Nonmetals are found here (In relation to the periodic table)
where is to the right of the ladder?
100
Name 3 of the 7 metalloids
What is B, Si, Ge, As, Sb, Te, At
100
As you go across a period on the periodic table, the metallic properties _____ and the nonmetallic properties ____
Decrease, Increase.
200
Lothar Meyer stated that elements were based on
What is increasing mass
200
A metal that loses an electron is now a
What is a cation
200
I am a negative nonmetal ion
What is an anion?
200
True or False: Polonium (Po) is a metalloid.
False. Polonium is a metal.
200
The transition elements found are found in these groups on the periodic table.
What are groups 3-11
300
This man left vacant spots in his table so that they could later be filled in when discovered.
Who is Dmitri Mendelyeev
300
This metal isn't a solid or a gas at room temperature
What is mercury
300
This is the most reactive nonmetal element
What is Fluorine?
300
True or False: Metalloids can only gain electrons.
False. They can both gain and lose electrons.
300
In a period, atomic radii decreases. Why?
More protons (increase in nuclear charge) are pulling on electrons that are still in the same shell.
400
This man stated elements are grouped in octaves.
Who is John Newland.
400
An alkali metal is not found by itself in nature. Why?
They are highly reactive and are commonly found in compounds with other less reactive elements.
400
There are (more, less, the same) electrons in a nonmetal ion.
More.
400
The Ionization Energy of metalloids is: High, Medium, Low
Medium.
400
Why is Helium considered a noble gas?
It's valence shell is completely filled.
500
Henry Gwyn Mosley based his period chart off of this experiment
What is the Rutherford gold-foil experiment
500
Approximately how many elements are metals?
What is 2/3?
500
Nonmetals are brittle, meaning they cannot be hammered into thin sheets. What is this physical property called?
What is malleability.
500
This metalloid has 5 energy levels, 18 electrons in its third energy level, and an oxidation number of -3.
What is Antimony (Sb)
500
The nonmetal X reacts with metal Y to form the compound: X1Y2. In what group would the nonmetal X be found?
What is group 16?