Elements Symbol
Helium
What is Potassium?
Column going up and down on the periodic table
What is groups or families?
2 valence electrons
Alkaline Earth Metals
Came up with the 4 groups: Earth, Air, Fire and Water
Who is Aristotle?
Chlorine
What is Cl?
Ti
What is Titanium?
The number of protons
What is the atomic number?
Group 18
What is the Noble Gases?
The year Mendeleev developed his table
What is 1869?
Sodium
What is Na?
Zn
What is Zinc?
Number of periods on the periodic table
What is 7?
Soft, Silvery, Solids
What is Alkali Metals?
Dobereiner's groups of 3
What are triads?
Tungsten
What is W?
P
What is Phosphorus?
3 main categories on the periodic table
What is metals, nonmetals and metalloids?
Reacts highly with water
What is Alkali Metals?
The most reactive Halogen
What is Flourine?
Arsenic
What is Ar?
Sn
What is Tin?
Having properties of both metals and nonmetals
What is metalloids?
Radium is the most reactive in this group
What is Alkaline Earth Metals?
Metal that is liquid at room temperature
What is Mercury?