Periodic Table Element Classifications

The video tutorial provides a quick guide on distinguishing metals, nonmetals, and metalloids using the periodic table. It explains the stair step division that separates metals and nonmetals, with hydrogen as an exception. The tutorial highlights that most elements are metals and describes metalloids as having properties of both metals and nonmetals. Examples of elements like cobalt, chlorine, and arsenic are given to illustrate the concepts.

What is the primary method used in the video to help distinguish between metals, nonmetals, and metalloids?

• Color coding

• Density measurement

• Electron configuration

• Using atomic numbers

What does the stair-step line on the periodic table represent?

• The division between solids and liquids

• The division between metals and nonmetals

• The division between alkali and alkaline earth metals

• The division between gases and liquids

Where are nonmetals typically located on the periodic table?

• At the bottom

• On the right-hand side

• In the center

• On the left-hand side

Which element is an exception to the general placement of metals and nonmetals on the periodic table?

• Hydrogen

• Helium

• Oxygen

• Carbon

What percentage of the periodic table is made up of metals?

• 50%

• 70%

• 90%

• 30%

Which of the following is NOT a metalloid?

• Silicon

• Arsenic

• Oxygen

• Boron

Metalloids have properties of which two types of elements?

• Nonmetals and liquids

• Metals and gases

• Metals and nonmetals

• Liquids and solids

Which element is classified as a metalloid?

• Iron

• Neon

• Antimony

• Carbon

Which of the following is a correct classification of elements?

• Helium - Metalloid

• Arsenic - Metalloid

• Chlorine - Metal

• Cobalt - Nonmetal