Metals, Non-metals, and Atomic Structure

What are the properties of metals?

• Opacity, brittleness, non-conductivity, dullness

• Transparency, flexibility, non-metallic luster, fragility

• Insulation, transparency, non-malleability, non-ductility

• Some properties of metals include conductivity, malleability, ductility, and luster.

What is the atomic structure of an atom?

• The atomic structure of an atom consists of only neutrons in the nucleus

• The atomic structure of an atom consists of a nucleus containing protons and neutrons, surrounded by electrons in energy levels or shells.

• The atomic structure of an atom consists of protons and electrons in the nucleus

• The atomic structure of an atom consists of a single proton surrounded by electrons

Tags

NGSS.MS-PS1-1

Name one metalloid element.

• Boron

• Oxygen

• Sulfur

• Gold

What are the periodic elements in the first row of the periodic table?

• Oxygen and Nitrogen

• Carbon and Boron

• Hydrogen and Helium.

• Sodium and Magnesium

What is the atomic number of an element?

• The number of protons in the nucleus of an atom

• The number of electrons in the outermost shell of an atom

• The total number of protons and neutrons in an atom

• The total number of electrons in an atom

What are the properties of metalloids?

• High electrical and thermal conductivity, transparency, flexibility, and tendency to lose electrons in chemical reactions

• Medium electrical and thermal conductivity, opacity, malleability, and tendency to gain electrons in chemical reactions

• Low electrical and thermal conductivity, opacity, fragility, and tendency to lose electrons in chemical reactions

• Metalloids have properties of both metals and non-metals, and can act as semiconductors.

Tags

NGSS.HS-PS1-1

What is the atomic mass of an element?

• The total number of protons and neutrons in an atom

• The number of protons in the nucleus of an atom

• The number of electrons in the outermost shell of an atom

• The total number of electrons in an atom

What are the periodic elements in the second row of the periodic table?

• Lithium and Beryllium.

• Oxygen and Nitrogen

• Carbon and Boron

• Sodium and Magnesium

All of the following are properties used to classify elements as metals, non-metals, and metalloids EXCEPT —

• texture
• conductivity
• luster
• malleability

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 below 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