Metals

What would be a good element to make an electrical wire out of?

• Copper because it is a metal and conducts electricity well.

• Carbon because it is a solid at room temperature.

• Hydrogen because it is a nonmetal and conducts electricity.

If a student wanted to find an element that was a good conductor of electricity, had a shiny surface, and was soft and malleable, where on the Periodic Table would he look?

• with the nonmetals

• with the metals

• with the gasses

The ability to be formed or shaped under pressure -

• luster

• ductility

• malleability

• conductivity

The ability to stretch into a wire without breaking -

• luster

• ductility

• malleability

• conductivity

The ability to conduct electrical current or thermal energy -

• luster

• ductility

• malleability

• conductivity

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-4

Which of these is NOT a physical property used to classify metals, nonmetals, and metalloids?

• texture

• malleability

• conductivity

Which group of elements has, in general, higher melting and boiling points?

• metal

• nonmetal

What would be the best way to determine if an element is malleable or not?

• Shine light on it.

• Try to hammer it flat.

• See if it conducts heat.

Both potassium and polonium have a metallic luster. Potassium conducts heat and electricity well, but polonium is only a semiconductor. What is the most likely classification of these elements?

• They are both metals.

• They are both nonmetals.

• Potassium is a metal and polonium is a metalloid.

All elements fit into one of three categories: metals, nonmetals, and metalloids.

• True

• False