C2.3 - Group 1: The Alkali Metals (FMock)

Question 1

What is the first group in the periodic table called?

Answer 1

The alkali metals

Question 2

Why are the alkali metals stored in oil?

Answer 2

Because they are extremely reactive, so the oil keeps them from reacting with oxygen or water

Question 3

What are 2 properties of the alkali metals?

Answer 3

• They are highly reactive
• They have a very low density
• They are soft so easy to cut
• When cut they have a shiny surface, but this is quickly lost due to oxidisation

Question 4

When any alkali metal reacts with oxygen it they form a layer of _____.

Answer 4

Oxide

E.g.) Sodium oxide

Question 5

Create a balanced symbol equation for the reaction of
sodium + oxygen –> sodium oxide
with state symbols

Answer 5

4Na(s) + O2(g) –> 2Na2 O(s)

2 Na2 atoms and 2 O atoms^^^

Question 6

The atoms of the alkali metals want to get a ____ outermost shell by loosing ____ electron. They react with ____________, loosing their _____ outer electron(s) to form a metal ____ carrying a __ charge.

Answer 6

full, one, non-metals, one, ion, 1+

Question 7

Going down group 1, the alkali metal’s melting points _____.

Answer 7

Decrease

Question 8

When an alkali metal reacts with water, it produces an alkaline solution containing the metal h_______e and ______.

Answer 8

Hydroxide, hydrogen

E.g. Sodium hydroxide and hydrogen

Question 9

Create a balanced symbol equation for the reaction of potassium + water –> potassium hydroxide + hydrogen

Include state symbols if possible

Answer 9

2K(s) + 2(H2O)(l) –> 2KOH(aq) +H2(g)

Question 10

What would you observe if sodium reacted with water which had universal indicator in it?

Answer 10

The sodium would fizz vigorously and burn with a yellow flame. It would turn the universal indicator purple because of the sodium hydroxide

Question 11

The alkali metals also react vigorously with non-metals such as chlorine gas. In this case they produce metal _______ which all dissolve readily in water to form a ___________ solution. The symbol equation for chlorine and sodium reacting is 2Na(s) + Cl2(g) –> _________

Answer 11

chlorides, colourless, 2NaCl(s)