Metals, Non Metals and Metalloids

Give an example of a metalloid.

• Silicon (Si)

• Iron (Fe)

• Aluminum (Al)

• Copper (Cu)

What are metals?

• Elements that are typically dull and brittle.

• Elements that are typically shiny, malleable, ductile, and good conductors of heat and electricity.

• Elements that are only found in liquid form.

• Elements that are poor conductors of heat and electricity.

What are nonmetals?

• Elements that are usually shiny and good conductors of heat and electricity.

• Elements that are usually dull, brittle, and poor conductors of heat and electricity.

• Elements that are typically malleable and ductile.

• Elements that are usually gaseous at room temperature.

What is the significance of fluorine in toothpaste?

• Fluorine helps maintain healthy teeth by preventing cavities and is classified as a nonmetal.

• Fluorine is used to enhance the flavor of toothpaste.

• Fluorine acts as a whitening agent for teeth.

• Fluorine is primarily used to freshen breath.

What is a semiconductor?

• A material that has electrical conductivity between that of a conductor and an insulator, often used in electronic devices.

• A type of metal that conducts electricity perfectly without resistance.

• An insulator that prevents the flow of electricity completely.

• A material that only conducts electricity at very high temperatures.

What are periods in the Periodic Table?

• Periods are the vertical columns in the Periodic Table that represent elements with similar properties.

• Periods are the horizontal rows in the Periodic Table that represent elements with increasing atomic numbers.

• Periods are the groups of elements that have the same number of electron shells.

• Periods are the sections of the Periodic Table that categorize elements based on their state of matter.

Why are metals good conductors of heat?

• They have a high density that allows heat to pass through them easily.

• They have free electrons that can move easily, allowing heat to transfer quickly.

• They are solid at room temperature, which helps in conduction.

• They have a shiny surface that reflects heat.

What does ductile mean?

• The ability of a material to be drawn into wires.

• The ability of a material to break easily.

• The ability of a material to conduct electricity.

• The ability of a material to resist heat.

Give an example of a metal.

• Iron (Fe)

• Oxygen (O)

• Carbon (C)

• Hydrogen (H)

What are groups in the Periodic Table?

• Horizontal rows in the Periodic Table that categorize elements by atomic number.

• Vertical columns in the Periodic Table that categorize elements with similar chemical properties.

• Randomly arranged sections in the Periodic Table without any specific categorization.

• The total number of elements present in the Periodic Table.