Metallic Properties Quiz

The physical properties of metals mentioned in the text include being shiny, good conductors of heat/electricity, high density, malleable and ductile, usually solid at room temperature, and sonorous (makes bell-like sounds when struck).

Chemical properties of metals mentioned in the text include reactions with acid, oxygen, cold water, and steam. Reactive metals like sodium and potassium react in cold water to produce hydroxide salts, while less reactive metals like copper only react in steam and produce oxide salts instead of hydroxide salts.

An alloy is a mixture of two or more metals, or a mixture of one or more metals with a non-metal. Alloys are used in preference to pure metals because they can be designed to have properties for specific usage purposes, such as being harder and more resistant to corrosion.

<p>Reactive metals like sodium and potassium react fine in cold water to produce hydroxide salts.</p> Signup and view all the answers

<p>Alloys are harder than pure metals because of the presence of different metals or non-metals in the mixture, which alters the properties of the material, making it harder and more resistant to corrosion.</p> Signup and view all the answers