Unit 3 - Periodic Table: GROUP 1 ALKALI METALS Flashcards Preview

Chemistry Unit 2 + 3 > Unit 3 - Periodic Table: GROUP 1 ALKALI METALS > Flashcards

Flashcards in Unit 3 - Periodic Table: GROUP 1 ALKALI METALS Deck (10):
1

Name 5 of these metals

Lithium

Sodium

Potassium

(Rubidium)

(Caesium)

2

How many electrons do these metals have in their outer shell? What does this mean?

1

This means they are reactive

3

What sort of density do alkali metals have?

What are the first 3, and what does this mean?

Very low

The first 3 are less dense than water, meaning they float on it 

4

As you go down group one..

The metals:

  • Become more reactive (because the outer electron is more easily lost because its further away from the nucleus)
  • have lower melting and boiling points

5

What are the alkali metals keen to loose? Why?

Their one outer shell electron to form a 1+ ion

6

What bonding do alkali metals ONLY do? 

Ionic

7

What do they produce when they react with non-metals?

Ionic compounds containing ions with a 1+ charge

These compounds dissolve in water to form colourless solutions

8

What do lithium, sodium and potassium do when reacted with water?

They float and move around and fizz and produce hydrogen

9

What do the metals form when they react with water?

Hydrogen gas and a metal hydroxide that dissolve in water to form an alkaline solution

10

What is the equation for the reaction between water and an alkali metal?

Metal + water → metal hydroxide + hydrogen