Periodic Table

Question 1

What is a period

Answer 1

A horizontal row of elements which have the same number of occupied shells of electrons

Question 2

Give an alkali metal

Answer 2

Lithium

Question 3

Give an alkaline earth metal

Answer 3

Magnesium

Question 4

Give a halogen

Answer 4

Hydrogen

Question 5

Give a noble gas

Answer 5

Argon

Question 6

Hydrogen chloride in water

Answer 6

HCl (g) = H+ (aq) + Cl- (aq)

Question 7

Electron arrangements of the noble gases

Answer 7

Stable, with eight electrons in their outer shell (except helium) so they do not tend to gain, lose or share electrons

Question 8

Physical properties of noble gases

Answer 8

Monatomic particles
Weak intermolecular forces of attraction between atoms
Forces are so weak so they have low melting and boiling points
Melting and boiling points increase down the group
Do not conduct electricity

Question 9

What is a group

Answer 9

A vertical column of elements which all have the same number of electrons in their outer shell and usually have similar chemical properties