Solidify your 14–16 students’ understanding of the structure and properties of metals and alloys

Metallic bonding is a type of strong chemical bond that occurs in pure metals and alloys

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Infographic poster, fact sheet and differentiated student worksheet exploring structure and bonding in metals and alloys. Display the poster in your classroom or on a projector. Alternatively, print it and use as a handout.

Use the accompanying activity to assess learners’ understanding of structure and bonding in metals and alloys with true and false, identify-the-error and long-answer questions. The scaffolded student worksheet includes prompts and a structure strip to offer more support for learners.


Did you know …?

The chemical formula of a metal is just the symbol for the element as metallic lattices do not contain a fixed number of atoms – eg sodium is represented as Na.

Structure and properties

A large amount of energy is required to overcome metallic bonds, so metals and alloys have high melting and boiling points.

Metals are good electrical conductors because the delocalised electrons are free to move through the structure and carry electrical charge.

The movement of electrons allows thermal energy to pass efficiently through metals, which means they are good thermal conductors too.

Did you know …?

The melting and boiling points of metals are related to the number of outer shell electrons. The greater the charge of the metal ion, the greater the number of delocalised electrons and the stronger the bonds.

Did you know …?

Aluminium alloys are used to make aircraft, because they’re lightweight and very strong. They are also corrosion resistant due to the ability of aluminium to form a thin protective layer of aluminium oxide.

More resources

All illustrations  © Dan Bright 

Want more posters on bonding?

Try these posters with classroom-ready activities for 14–16 learners: