Cockermouth School AQA GCSE Metallic Bonding Quiz

What type of bonding consists of positive ions surrounded by a sea of electrons?

• Metallic
• Ionic
• Covalent
• Coordinate

Explain why metals can conduct electricity

• Free electrons
• Free moving ions
• Free electrons to carry charge
• They are conductive

Explain why pure metals are soft

• Free electrons
• Soft ions
• Layers of ions cannot slide
• Layer of ions can slide easily

What is an alloy?

• Mixture of elements
• Mixture of non-metals
• Mixture of metal & other element(s)
• Metallic compund

Which of the following will alloying NOT change?

• Position in periodic table
• Hardness
• Reactivity
• Cost

Explain why alloys can be harder than pure metals

• Fewer electrons
• Layers of ions slide less easily
• More electrons
• more layers