Metal Nonmetal Metalloids

The elements argon, krypton, and xenon are all non-metals. What property would these elements have in common?

• Good conductor of thermal energy
• Poor conductor of electricity
• Shiny, lustrous surface
• Soft and malleable

The word “luster” refers to which property of matter?

• The ability to conduct electrical or thermal energy
• Capable of being drawn out into thin wires
• The way a surface appears when it reflects light
• Suitable for being shaped by beating or rolling

The table shows the properties of four elements. Which element in the table is classified as a metal?

• Manganese
• Sulfur
• Silicon
• Neon

All of the following are properties used to classify elements as metals, non-metals, and metalloids EXCEPT —

• texture
• conductivity
• luster
• malleability

Iron (Fe) is classified as a metal while Silicon (Si) is classified as a metalloid. Which physical property do these two elements most likely have in common? They both —

• exist as gases at room temperature
• have a metallic shine or luster
• are brittle and shatter easily
• conduct electricity very well

A student tested the conductivity of four elements using an incomplete electrical circuit. When the element is placed in the circuit, the bulb lights up brightly, lights up dimly, or does not light up at all based on the element’s ability to conduct electricity. The table shows the results of her investigation. Based on the results of the conductivity test, which element is classified as a metal?

• Hydrogen
• Arsenic
• Krypton
• Copper

Tags

NGSS.MS-PS1-2

All of these properties describe metals EXCEPT —

• malleable
• conductor
• brittle
• shiny

Conductivity is a physical property of matter that describes its ability to —

• reflect light from its lustrous surface.
• transfer thermal and electrical energy.
• exist in nature as a solid, liquid, or gas.
• be hammered and rolled into thin sheets.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Unlike non-metals, most metals tend to —

• conduct electricity and heat well.
• be gases at room temperature.
• break easily when hammered.
• have less luster and shine.

Electrical wires are made from metals such as copper and chromium because —

• wires can be stretched and bent.
• most metals have a metallic luster.
• electricity flows in a complete circuit.
• metals are good conductors of electricity.