Homework: Metallic Bonding

• Chemistry
• Upper Secondary (Key Stage 4)
• GCSE

Homework: Metallic Bonding

You are going to write notes summarising the basics of metallic bonding.

These notes must include:

• A description and labelled diagram showing the structure of a pure metal. (Must include charges on particles).
• A labelled diagram showing the structure of an alloy.
• Definitions of the words on the following page.
• An explanation of the properties of pure metals and alloys (electrical conductivity, thermal conductivity, malleability, ductility, strength of pure metal vs alloy, melting point).

I have attached videos to help you, however I would encourage you to use other reliable sources to supplement e.g. the BTEC textbook.

There are slides where you can attach a picture of your notes, so that I can review them. 

There are some questions to answer at the end of the slides. You will need a periodic table to help you with some of the answers.

Definitions

• Metallic bond
• Electrostatic force
• Delocalised electron
• Metallic lattice
• Alloy (give common examples)
• Malleable
• Ductile

Upload a photo of your notes here.

Metals form...

1. Positive ions
2. Negative ions

Water is...

1. Ionic
2. Covalent
3. Metallic

Sodium Chloride is...

1. Ionic
2. Covalent
3. Metallic

Metallic substances

Which of the following are metallic substances?

Sodium  chloride

Water

Steel

Calcium carbonate

Carbon dioxide

Iron fluoride

Magnesium Sulfate

Sulfur dioxide

Carbon

Nickel

Draw a diagram(s) showing why aluminium has a higher melting point than sodium.

Why is copper a better electrical conductor than potassium? (3 marks).

Explain why steel is stronger than iron. (4 marks).