Metals, Nonmetals, and Metalloids

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 table shows the properties of three classifications of elements. What are the best headings for columns A, B, and C?

• (A) Metals, (B) Nonmetals, and (C) Metalloids

• (A) Non-metals, (B) Metalloids, and (C) Metals

• (A) Metals, (B) Metalloids, and (C) Non-metals

• (A) Non-metals, (B) Metals, and (C) Metalloids

All of these properties describe metals EXCEPT -

• malleable

• conductor

• brittle

• shiny, metallic luster

The table shows the physical properties of four elements.Which element is classified as

a metalloid?

• Titanium

• Selenium

• Potassium

• Polonium

Metalloids have some properties of both metals and nonmetals. Which of the following properties do metalloids share with nonmetals?

• Conducts electricity and heats well

• Can be hammered into thin sheets.

• Is brittle and breaks easily.

• Has a shiny, metallic luster.

An unknown substance is a very good conductor of heat and electricity and can be bent and shaped easily. This unknown substance could be which of the following elements from the table?

• Hydrogen

• Mercury

• Copper

• Boron

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

The diagram shows the locations of some elements on the Periodic Table. Which element shares properties of both metals and non-metals?

• Beryllium (Be)

• Fluorine (F)

• Lead (Pb)

• Silicon (Si)

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

• Conducts electricity and heat well

• Can be hammered into thin sheets

• Is brittle and breaks easily

• Has a shiny, metallic luster

Roger is examining an object in science class. It is dull, yellow, and a brittle solid. The sample is most likely a—

• Metal

• Nonmetal

• Metalloid

• Nobel gas