Objective Quiz 2

Which of the following is a property of a non-metal?

• Conducts electricity and heats well

• Can be hammered into thin sheets

• Is brittle and breaks easily

• Has a shiny, metallic luster

All of the following properties are used to classify elements as metals, non-metals, or 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 used the conductivity of four elements using an 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 the conductivity test, which element is classified as a metal?

Hydrogen | Bulb did not light

Arsenic | Bulb burned dimly

Krypton | Bulb did not light

Copper | Bulb burned brightly

• Hydrogen

• Arsenic

• Krypton

• Copper

All of these properties are used to describe metals EXCEPT -

• Malleable

• Conductor

• Brittle

• Shiny

A pure substance is an ________.

Which of the following would help a student classify an unknown substance?

• Measure its conductivity

• Determine its density

• Find it's melting point

• Observe it's color

Tags

NGSS.MS-PS3-4

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

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