6.2.1

Iron is a good conductor, malleable and magnetic. What type of element is Iron?

• Metal

• Non-metal

• Metalloid

• None of the above

Able to be beaten or hammered into shapes

• lustre

• malleable

• brittle

• insulator

The approximate number of elements we know about today is .......

• 18
• 48
• 118
• 1018

What is NOT a property of metals

• brittle
• ductile
• malleable
• conductor

Where are the non-metallic elements found in the periodic table?

• In the middle
• In the top rows
• On the left-hand side
• On the right-hand side

Some students conducted a laboratory investigation to learn more about the physical properties of different elements. They observed four samples and recorded their observations in the table . Based on these observations, which sample is most likely a nonmetal?

• Sample 1
• Sample 2
• Sample 3
• Sample 4

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 would help a student classify an unknown element as a metal, metalloid, or non-metal?

• Measure its conductivity
• Determine its density
• Find its melting point
• Observe its color

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.

Use the table.

An unknown substance is a semi-conductor and is very brittle. This unknown substance could be which of the following elements form the table?

• Copper

• Mercury

• Boron

• Hydrogen

Tags

NGSS.HS-PS1-1