Metalloid

The video explains that some elements have properties between metals and non-metals, making them difficult to classify. These elements are known as metalloids and include boron, silicon, germanium, arsenic, antimony, tellurium, and polonium.

What makes certain elements difficult to classify strictly as metals or non-metals?

• Their unique physical and chemical properties

• Their color

• Their abundance in nature

• Their atomic number

Which of the following is a characteristic of metalloids?

• They are all radioactive

• They are highly reactive with water

• They have properties of both metals and non-metals

• They are all gases at room temperature

Which element is not considered a metalloid?

• Silicon

• Oxygen

• Boron

• Arsenic

Which of the following elements is a metalloid?

• Iron

• Germanium

• Helium

• Carbon

What is a common feature of metalloids?

• They have a mix of metallic and non-metallic properties

• They are excellent conductors of electricity

• They are all found in the Earth's core

• They are poor conductors of heat