Topic 6- Group 1 Flashcards

1
Q

Describe 2 features of alkali metals

A

Alkali metals are soft and have relatively low melting and boiling points Malleable, low density and shiny when you remove the oxide layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Why can some elements be classified as alkali metals based on their position on their position in the periodic table

A

Elements in the same group in the periodic table have similar chemical properties. This is because their atoms have the same number of electrons in the highest occupied energy level. Group 1 elements are reactive metals called the alkali metals.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Describe a pattern in group 1

A

They become more reactive as you go down the list

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

From top to bottom recite group 1’s elements

A
Lithium
Sodium
Potassium
Rubidium
Cesium
Francium
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Explain the pattern of reactivity in terms of electronic configuration

A

The more shells that an atoms electronic configuration contains, the more reactive it is because the force of attraction is less therefore it will lose electrons more easily

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the products of the reaction of lithium and water

A

lithium hydroxide and hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the products of the reaction of sodium and water

A

Sodium hydroxide and hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the products of the reaction of potassium and water

A

potassium hydroxide and hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Describe the reactions of water with lithium, sodium and potassium

A

Lithium is the least reactive and potassium is the most.
Lithium- floats and fizzes steadily and becomes smaller till it eventually disappears.
Sodium- Coluorless solution formed, the sodium melts to form a ball that moves around on the surface, it fizzes rapidly and hydrogen produces may burn with an orange flame before sodium disappears.
Potassium- The metal melts and floats, it moves around very quickly on surface and the hydrogen ignites instantly, the metal also sets on fire with sparks and a lilac flame, sometimes a small explosion at end,

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is an alkali

A

a insoluble base

How well did you know this?
1
Not at all
2
3
4
5
Perfectly