Cambridge Lower Secondary Checkpoint Science: Chemistry II: Properties of Materials

Properties of materials (metals, non-metals, and uses)

Question 1 of 30

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Metals vs non-metals (reasoning):

A student is given four solids labelled W, X, Y, and Z. Each is tested at room temperature.

• W is shiny, can be hammered into a thin sheet, and conducts electricity.
• X is dull, breaks when hit, and does not conduct electricity.
• Y is shiny but snaps easily and does not conduct electricity.
• Z is dull, can be drawn into a wire, and conducts electricity.

Which conclusion is the best supported by the evidence?

Select one option.

W is most likely a metal, and X is most likely a non-metal.
All shiny solids are metals, so W and Y are metals.
Only metals conduct electricity, so W and Z must be the same element.
A solid that snaps easily must be a metal because metals are strong.
X is a metal because it is dull and metals are always dull.

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