Metalloids and Nonmetals Exploration Quiz

Which of the following elements is a metalloid?

• Oxygen

• Silicon

• Helium

• Carbon

Answer explanation

Silicon is classified as a metalloid due to its properties that are intermediate between metals and nonmetals. In contrast, oxygen, helium, and carbon are not metalloids.

What is a common use of metalloids in technology?

• Fuel

• Insulation

• Semiconductors

• Lubricants

Answer explanation

Metalloids, such as silicon and germanium, are widely used in technology as semiconductors. They have electrical properties that can be manipulated, making them essential for electronic devices like transistors and diodes.

Which property is typical of nonmetals?

• Malleability

• High conductivity

• High ionization energy

• Shiny appearance

Answer explanation

Nonmetals typically have high ionization energy, meaning they require a lot of energy to remove an electron. This property distinguishes them from metals, which are usually malleable and conductive.

Where are nonmetals generally located on the periodic table?

• Left side

• Middle

• Bottom row

• Right side

Answer explanation

Nonmetals are generally located on the right side of the periodic table. This area includes elements like oxygen, nitrogen, and carbon, which are essential for life and exhibit distinct properties compared to metals.

Which element is a nonmetal that is essential for respiration?

• Nitrogen

• Oxygen

• Silicon

• Boron

Answer explanation

Oxygen is a nonmetal and is essential for respiration in most living organisms, as it is required for cellular processes that produce energy. The other options, nitrogen, silicon, and boron, do not play this critical role.

What characteristic do metalloids share with metals?

• Brittleness

• High conductivity

• Dull appearance

• Low melting point

Answer explanation

Metalloids share high conductivity with metals, making them useful in electronics. Unlike metals, they can be brittle and may have a dull appearance, but their ability to conduct electricity is a key similarity.

Which of the following is NOT a metalloid?

• Arsenic

• Antimony

• Boron

• Neon

Answer explanation

Neon is a noble gas and does not exhibit the properties of metalloids. Arsenic, antimony, and boron are all classified as metalloids due to their intermediate properties between metals and nonmetals.

What role does carbon play in biological systems?

• Provides insulation

• Forms the backbone of organic compounds

• Conducts electricity

• Acts as a semiconductor

Answer explanation

Carbon is essential in biological systems as it forms the backbone of organic compounds, including proteins, lipids, carbohydrates, and nucleic acids, which are vital for life processes.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which element is a noble gas?

• Silicon

• Boron

• Neon

• Fluorine

Answer explanation

Neon is a noble gas, characterized by its lack of reactivity due to a full valence shell of electrons. In contrast, silicon, boron, and fluorine are not noble gases.

What is a common property of noble gases?

• High reactivity

• High density

• Malleability

• Poor conductivity

Answer explanation

Noble gases are known for their poor conductivity due to their complete valence electron shells, which make them stable and unreactive. This is why they do not conduct electricity well, unlike metals.