Elements and Compounds

1
Elements and Compounds

• 10/22/09

2
Element

• A substance that contains only one type of atom
• Example- Hydrogen, Oxygen, carbon, gold, copper,
  silver

3
How do you classify an Element?

• Elements can be classified by its
  characteristics.
• Metals (conducts electricity, and conducts heat)
• Nonmetals (doesnt conduct electricity)
• Metalloids /Semi-metals (holds properties of
  both a metal and nonmetal)

4
How are elements organized?

• We use the Periodic Table
• Periodic Table (it is a system to classify
  elements in an organized way)

5
How to read the periodic table?

• Hydrogen

Atomic Number
Symbol
Name of element
Atomic Mass (how many protons and neutrons are in
the nucleus)
6
Name of Element
Atomic Number
Symbol
Atomic Mass
7
What is a Compound?

• Compound- substance made of two or more elements
  together
• Example Salt, water, carbon dioxide

Hydrogen Atoms
Sodium atoms
Chlorine Atoms
Oxygen Atoms
8
Watch Video Clips
9
Lets Label the Periodic Table

• Look at the periodic table
• Make a Key to help us understand how to read an
  element
• Color the Nonmetals
• Color the Metals
• Color the Metalloids

10
(No Transcript)