1.8 Metals and non-metals

• What property makes metals good conductors of heat and electricity?

  Free electrons
• What is the typical appearance of metals?

  Shiny, lustrous
• Non-metals are poor conductors of heat and electricity
• Non-metals have a dull appearance
• Metals have a dull appearance.

  False
• Why are metals good conductors of electricity?

  Free electrons
• Metals conduct heat and electricity due to the presence of free electrons
• Why are non-metals poor conductors of electricity?

  Tightly bound electrons
• Metals can be hammered into thin sheets because they are malleable.


  True
• Non-metals are good conductors of heat and electricity.

  False
• Match the metal property with its description:

  Appearance ↔️ Shiny and lustrous

  Conductivity ↔️ Good conductors of heat and electricity

  Malleability ↔️ Can be hammered into thin sheets

  Ductility ↔️ Can be drawn into wires
• Why are metals good conductors of heat and electricity?

  Free electrons
• Metals are good conductors of heat and electricity
• Non-metals have free electrons that conduct electricity.

  False
• Non-metals exhibit properties that are the opposite of metals.


  True
• Non-metals have tightly bound electrons that limit their conductivity.


  True
• Non-metals have a dull, non-shiny appearance
• What does malleability refer to in metals?

  Being hammered into sheets
• Why do metals conduct electricity well?

  Free electrons
• Metals are good conductors of heat and electricity
• What is the chemical symbol for oxygen?

  O
• Match the non-metal with its chemical symbol:

  Sulfur ↔️ S

  Chlorine ↔️ Cl

  Nitrogen ↔️ N
• Malleability refers to the ability of metals to be hammered into thin sheets
• What is the appearance of non-metals?

  Dull, non-shiny
• Free electrons in metals allow them to conduct heat efficiently.


  True
• What is the key difference between metals and non-metals in terms of electron movement?

  Free vs tightly bound electrons
• Non-metals generally have high density.

  False
• What is the appearance of metals?

  Shiny, lustrous
• What is the density of non-metals generally?

  Low
• Carbon is an example of a common non-metal
• The key difference between metals and non-metals is the presence of free electrons
• Metals are poor conductors of heat.

  False
• Non-metals have tightly bound electrons.


  True
• What property allows metals to conduct heat and electricity efficiently?

  Free electrons
• Metals have a shiny and lustrous
• Metals can be drawn into wires because they are ductile
• What is the typical density of non-metals?

  Generally low density
• Metals have tightly bound electrons, which limits their ability to conduct electricity.

  False
• Order the properties of metals and non-metals based on their differences:

  1️⃣ Appearance: Shiny vs. Dull

  2️⃣ Conductivity: Good vs. Poor

  3️⃣ Malleability: Yes vs. No

  4️⃣ Ductility: Yes vs. No

  5️⃣ Density: High vs. Low
• Metals generally have a high density