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Properties of materials

Properties of materials

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Question 18

The table below shows the physical properties of four different substances: A\mathbf{A}A, B\mathbf{B}B, C\mathbf{C}C, and D\mathbf{D}D.

SubstanceMelting point (∘C^\circ\text{C}∘C)Boiling point (∘C^\circ\text{C}∘C)Soluble in water?Conducts electricity in solid state?Conducts electricity in molten state?
A\mathbf{A}A114114114184184184NoNoNo
B\mathbf{B}B770770770142014201420YesNoYes
C\mathbf{C}C171017101710223022302230NoNoNo
D\mathbf{D}D327327327174917491749NoYesYes
a.

Identify which substance is a liquid at a temperature of 150∘C150^\circ\text{C}150∘C.

[1]
b.

Substance B\mathbf{B}B is an ionic compound. Use the data in the table to explain why.

[3]
Markscheme

Properties of materials Questions

  1. GCSE
  2. /Chemistry
  3. /Properties of materials

48 exam-style questions on OCR GCSE Chemistry Properties of materials. Each one has a worked solution and a mark scheme showing where the marks go.

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