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Properties of materials

The physical properties of four substances, $W$ , $X$ , $Y$ , and $Z$ , were tested, and the results are recorded in the table below:

Substance	Melting point ( $∘C^\circ\text{C}$ )	Electrical conductivity as a solid	Electrical conductivity as a liquid	Solubility in water
$W$	1610	Poor	Poor	Insoluble
$X$	1085	Good	Good	Insoluble
$Y$	801	Poor	Good	Soluble
$Z$	-112	Poor	Poor	Soluble

Which option correctly classifies the bonding and structure of two of these substances?

$W$ is giant covalent and $Y$ is ionic.

$X$ is ionic and $Z$ is metallic.

$Y$ is simple molecular and $W$ is metallic.

$Z$ is giant covalent and $X$ is simple molecular.

Properties of materials Questions

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.