What is an element?
An element is a pure substance that cannot be broken down by any physical or chemical means into simpler substance that is made of the same atom
The vertical columns are called ___________?
Groups
The horizantal collums are called the __________?
Periods
Group 1 elements are called the ______ ______ ?
Alkakli metals
What other name is given to the group 2 elements?
Alkanine earth metals
What group are the halogens?
Group 7
Group 0 are known as the ____ _____
Noble gases
Why are they called noble gases?
Because the gases are very unreactive
What symbol is (K)?
Potassium
What symbol is (Cu)?
Copper
What symbol is (Cl)
Chlorine
What symbol is (He)
Helium
What symbol is (Li)
Lithium