Alkali Metals

Question 1

In the periodic table, what group are the alkali metals?

Answer 1

1

Question 2

Give me 5 names of metals found in group 1 of the periodic table.

Answer 2

Lithium

Potassium

Sodium

Rubidium

Cæsium

Question 3

What happens as you go down group 1 metals ? Why?

Answer 3

The Alkali metals get more reactive

-outer shell electrons is further away from nucleus - easier to lose - less energy needed to lose

(Atomic radius is larger as you go down group 1 in the periodic table)

Question 4

How many outer shell electrons do alkali metals have ?

Answer 4

1

Question 5

Why do all alkali metals have similar properties and are very reactive?

Answer 5

Only have 1 outer shell electron

Question 6

What are the properties of alkali metals?

Answer 6

Low melting and boiling point

Low density - lithium, potassium, sodium float on water

Very soft - cut with a knife

No covalent bonding . Only ionic bonding (think about it, it’s easier to let go of one electron than share with other atoms to have a full shell)

Question 7

What is oxidation?

Answer 7

The loss of electrons

Question 8

What happens when alkali metals are mixed with cold water?

Answer 8

Produce hydrogen gas

Question 9

After a reaction with an alkali metal and water, hydrogen is formed. What is the other compound?

Answer 9

Hydroxide

If it was potassium -
Potassium hydroxide

Question 10

Which colour does potassium, sodium and lithium give when burn it a blue flame?

Answer 10

Lithium - red

Sodium - yellow

Potassium - lilac/ violet