Chemistry Basics

1
Chemistry Basics

• Metals, Metalloids, Non-Metals

2
Grouping of Elements

• As we have discussed in class, elements on the
  periodic table can be broken down into different
  groups. Some of the main groupings are
• Metals
• Non-Metals
• Metalloids

3
Discussion - Metals

• 70 of the elements are metals
• What are pots pans made of?
• Why?
• What are wires made of?
• Why?
• What is most jewelry made of?
• Why

4
Notes Metals

• Good conductors of heat
• Good conductors of electricity
• Luster Shiny and reflective
• Malleable Can be pounded/shaped
• without breaking
• Ductile Drawn out into wires
• Examples gold, silver

5
Discussion Non-Metals

• What do we cover wires with?
• Why?
• What are the handles of your
• pots and pans covered with?
• Why?
• What is your clothing made of?
• Why?

6
Notes Non-Metals

• Usually gases or brittle solids at room
  temperature
• Poor conductors of heat and electricity
• insulators
• Only 17 non-metals
• Many are elements essential for life
• Examples carbon, sulfur, nitrogen

7
Discussion Metalloids

• What are computer chips made of?
• Why?
• What material do they use in plastic surgery?
• Why?

8
Notes Metalloids

• Have properties of both metals and non-metals.
• Semi-Conductors - Not great conductors of heat
  and electricity.
• They are ductile and malleable
• Example silicon

9
Draw the Table in Notebook
Substance Appearance Conductivity Malleability
Metals Luster Shiny Good Conductors Malleable
Metalloids Can be shiny or dull Semi-Conductors Malleable
Non-Metals Dull Insulators, not good conductors Brittle, not malleable