Chemistry Periodic Table

Question 1

How are elements arranged on the Periodic Table?

Answer 1

In order of atomic number
The columns, called groups/families have similar properties
All elements in a row (period) have the same number of electron shells/orbits

Question 2

What is a family/group on the Periodic Table?

Answer 2

A column on the Periodic Table
Elements with similar properties
Elements with the same number of electrons in their outer shells/orbits

Question 3

What is a period on the Periodic Table?

Answer 3

A row on the Periodic Table
Elements with the same number of electron shells or orbits

Question 4

What are alkali metals?

Answer 4

Found in the first column of the periodic table
Have one electron in their outer shell
Soft, very reactive metals

Question 5

What are alkaline earth metals?

Answer 5

Found in the second column of the periodic table
Have two electrons in their outer shell
Reactive metals, but not as reactive as alkali metals

Question 6

What are halogens?

Answer 6

Found in the second last column of the periodic table
Have one electron less than a full outer shell
Very reactive non-metals

Question 7

What are noble gases?

Answer 7

Found in the last column of the periodic table
Have a full outer shell
Non-reactive non-metals

Question 8

What are metalloids?

Answer 8

They touch the ‘step line’ on the periodic table
Have some properties of metals and some of non-metals

Question 9

Who was Mendeleev?

Answer 9

Credited with creating the Periodic Table of Elements