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VICChemistryQuick questions
Unit 1: How can the diversity of materials be explained?
Quick questions on Metallic and ionic bonding: VCE Chemistry Unit 1
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are alloys?Show answer
An alloy is a mixture of a metal with one or more other elements (often other metals). Examples: bronze (Cu + Sn), brass (Cu + Zn), stainless steel (Fe + Cr + Ni + C), solder (Sn + Pb).
What is ionic bonding model?Show answer
An ionic compound is a 3D lattice of alternating positive and negative ions held together by the strong electrostatic attraction between opposite charges (the ionic bond). It is non-directional: every cation is attracted to every nearby anion.
What is not reducing to lowest ratio?Show answer
Mg^2+ and O^2- cross-over gives Mg2O2; reduce to MgO.
What is q1?Show answer
Explain, using the bonding model, why magnesium is a good electrical conductor but solid magnesium chloride is not. [3 marks]
What is q2?Show answer
Write the formula and name for the ionic compound formed between (a) calcium and phosphate, (b) chromium(III) and sulfate. [4 marks]
What is q3?Show answer
Consider sodium and bronze. (a) Describe the bonding in each. (b) Predict and explain which has the higher melting point.
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