8Fc Metal Detecting.

Metals are usually

• Shiny.

• Flexible.

• Good heat and electrical conductors.

• All of the above.

Metals are usually solids at room temperature.

• True.

• False.

Mercury is a liquid (metal) at room temperature.

• True.

• False.

The three magnetic metals are __________ .

• Iron.

• Cobalt.

• Nickel.

• All of the above.

Non-metals are often:

• good heat and electrical insulators.

• shiny.

• flexible.

• good heat and electrical conductors.

Sulphur and glass are brittle which means they break easily.

• True.

• False.

Which list contains only metals?

• copper, gold, and silver.

• copper, gold, and sulphur.

• silver, oxygen and iodine.

• oxygen, iodine, and sulphur.

Copper is used for electrical wiring because it is __________.

• shiny and flexible.

• shiny and a good electrical insulator.

• flexible and a good conductor of electricity.

• flexible and a good conductor of heat.

Which list contains three typical properties of metals?

• good conductor of heat, brittle, low melting point.

• poor conductor of heat, strong, high melting point.

• good conductor of electricity, strong, high melting point.

• poor conductor of electricity, weak, low melting point.

Which list contains only non-metals?

• Carbon, calcium, and cobalt.

• Hydrogen, oxygen, and nitrogen.

• Gold, silver, and bronze.

• Lithium, sodium, and potassium.