Y9: Noble Gases

• Chemistry
• Lower Secondary (Key Stage 3)

Y9: Nobel Gases

Alkali metals

Halogens

Group 3

Period 1

Nobel gases

Reactivity increases

Reactivity decreases

Which of these is not a property of the Alkali Metals?

1. Conduct electricity
2. Soft
3. Shiny
4. High melting points

Different metals are reacted with water. Match the observations with the metal. (Use your periodic table).

	Gently fizzes an moves slowly on the surface.
	Fizzes and moves rapidly on the surface.
	Fizzes, flames (purple) and sparks. Moves very rapidly on the surface.

Lithium

Potassium

Sodium

How many electrons in the outer shell of an element in group 1 (alkali metal)?

1. 1
2. 2
3. 3
4. 4

How many electrons in the outer shell of elements in group 7 (halogens)?

1. 4
2. 5
3. 6
4. 7

How many electrons in the outer shell of group 0 (nobel gases)?

How many shells does an element in period 3 have?

1. 1
2. 2
3. 3
4. 4

Match the element to its appearance.

Pale green gas

Pale yellow gas

Chlorine

Fluorine

Bromine

Iodine

Which substance is diatomic?

1. 
2. 
3. 
4. 

Which element is NOT a nobel gas (group 7)

1. Helium
2. Krypton
3. Oxygen
4. Argon

Which element is a nobel gas?

1. Chlorine
2. Sodium
3. Iodine
4. Neon

Which atom is a nobel gas?

1. 
2. 
3. 
4. 

Which electron structure belongs to a nobel gas?

1. 2,8,3
2. 2,5
3. 2,8,1
4. 2,8

Which substance is a nobel gas?

1. 
2. 
3. 
4. 

Miss Buchanan has a beaker of brown liquid. How do you know it is not in group 0? (What group could it be in?)

What is the common name of group 7?

1. Alkali metals
2. Halogens
3. Nobel gases

How many electrons do alkali metals have in their outer shell?

1. 1
2. 7
3. 8
4. 0

The reactivity of the halogens...

1. Increase down the group.
2. Decreases down the group.
3. Unreactive

The most reactive alkali metal is...

1. Li
2. Na
3. K
4. Rb

The most reactive halogen is...

1. F
2. Cl
3. Br
4. I

Match the properties to their group.

Group 1

Group 2

Group 3

Alkali metals

Halogens

Nobel gases

Soft, shiny metals

Coloured gases, liquids and solids

Colourless gases

Very low melting points

Very reactive

Unreactive

Reactivity decreases down the group

Diatomic

Monatomic

2,8,1

2,8,7

2,8,8

Argon

Chlorine

Lithium

Give 2 differences between group 1 and group 0.

Suggest why krypton will react with fluorine but not chlorine.

Suggest some properties of transition metals.

Transition metals have a low density so can float on water.

1. True
2. False

Transition metals are soft.

1. True
2. False

Transition metals form coloured compounds.

1. True
2. False

Transition metals are poor conductors of heat.

1. True
2. False

Which of these is NOT a property of transition metals

1. Shiny/lustrous
2. High melting points
3. Soft
4. Conduct electricity

Which of these is NOT a property of transition metals

1. Form coloured compounds
2. Very reactive
3. Malleable
4. Conduct heat

Sort the properties into the correct group.

Alkali metals

Both

Transition metals

Soft

Hard

Conduct electricity

Conduct heat

Very reactive

React slowly

Shiny

Malleable

Ductile

High density

Low density

Form coloured compounds

Form multiple different ions

High melting points

Low melting points