Warm-Up:

1
Warm-Up

• Describe any object in the room in as much detail
  as you can.
• (like I-spy)

Then get out a piece of notebook paper. Dont rip
it out!
2
We can say that all of the things you used to
describe those objects are PROPERTIES of the
objects.

• A property is any characteristic that can be used
  to identify and describe matter
• Two types of properties
• Physical
• Chemical

3
Physical Properties

• A characteristic that is observed or measured
  without changing the identity of a substance.
• Use the 5 SENSES!

4
Examples

• Mass
• Volume
• Color
• Hardness
• Magnetism
• Weight
• Phase
• Any more?

5
A couple more

• Density
• Mass/Volume
• Melting Point
• Temp. that a solid turns into a liquid
• Boiling Point
• Temp. that a liquid turns into a gas

6
Chemical Properties

• A characteristic that describes how a substance
  will interact with other substances during a
  chemical reaction.

Na2O2 H2O
7
Examples

• Reactivity
• Ability to
• Burn
• Rust
• React to light
• React with acids
• Any more?

8
Reactivity

• How likely an element is to form bonds with other
  elements.

Very reactive
Not reactive