Classifying Matter: Metal, Metalloids, metalloids.

What is the term for a substance that allows the flow of electrical charge or transfers thermal energy through matter?

• Nonmetal

• Conductor

• Insulator

• Metalloid

Tags

NGSS.MS-PS2-3

NGSS.MS-PS3-3

Which physical property describes the ability of a material to be permanently reshaped without breaking or cracking?

• Conductivity

• Luster

• Malleability

• Brittle

What is the term for a substance that does not conduct heat or electric current?

• Conductor

• Nonmetal

• Insulator

• Metalloid

What is the term for a physical property that describes the way the surface of a substance shines or reflects light?

• Brittle

• Conductivity

• Luster

• Malleability

What are elements that have properties of both metals and nonmetals called?

• metals

• Metalloids

• Insulators

• Conductors

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

Which of the following is a property of a metal?

• Conducts electricity poorly
• Can be hammered into thin sheets
• Is brittle and breaks easily
• Has a dull appearance

All of the following are properties used to classify elements as metals, nonmetals, 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.
• insulate 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
• Cooper

Tags

NGSS.MS-PS2-3