1. Reviewing MATTER Matter: anything that has mass and volume
Mass – the amount of matter in something
Volume – the amount of space something occupies 1

2. Matter can be classified
Element- substance with only one type of atom
Compound- substance with two or more elements chemically bonded together.

3. When a compound forms, its properties are different from the original elements

4. What is a property?
Property: a characteristic of a substance that can be observed
It can be a physical or chemical property. 4

5. Physical Property
- A property that can be observed and measured without changing the material’s composition. 5

6. EXTENSIVE Physical Property
Extensive - Properties that depend on the amount of matter present.
Mass - A measurement of the amount of matter in a object (grams).
Weight - A measurement of the gravitational force of attraction of the Earth acting on an object.
Volume - A measurement of the amount of space a substance occupies.
Length- distance between two points

7. Extensive Physical Properties
Look at your pencil or pen, if you break it in half, the extensive properties will be different.
The pieces will have a different mass, weight, volume, and length.
Extensive properties depend on size

8. INTENSIVE Physical Property
Intensive - Properties that do not depend on the amount of the matter present.
Color
Odor
Luster (Shiny, glassy, dull)
Malleability (can it be flattened)
Ductility (can it be pulled into a wire)
Electrical Conductivity (can it conduct electricity)
Hardness (on a Mohs scale)
Melting/Freezing/Boiling Points
Density
State of Matter (solid, liquid, gas)

9. Intensive Physical Properties
Look at your pencil or pen, if you break it in half, the intensive properties will be the same.
It’s still yellow, the graphite still has a hardness of 2, the density of each piece hasn’t changed, and it’s still a solid.
Intensive properties DON’T depend on size

10. Chemical Properties
Chemical property: a property that can only be observed by changing the composition (chemical formula) of the material.
Does it have the potential to change into a new substance?
Examples:
Will it burn?
Will it rust?
Will it react with vinegar (acids) or other chemicals? 10

11. Properties of Matter
Why do I care? Understanding the different properties of matter will help you to better classify and describe the world around you.

12. Physical and Chemical Properties can be used to identify matter
Gold or fool’s gold?
Diamond or quartz?
Oak or Maple?
Metamorphic or Igneous?
Zinc or Aluminum?
Properties song

13. Challenge: Use physical properties to identify your cookie
Problem: Can you observe and record the physical properties of a cookie and later identify it from a pile of other cookies?
Safety: Do not open the bag and do not eat the cookie!