1. 1.2 Classification of Matter
Chemistry
Objectives 2

2. Essential Questions What is a pure substance? What is an element?
What is a compound?
What are the two types of mixtures and how can you tell them apart?
How can you tell the different classifications of matter apart?

3. Classification of Matter
PURE SUBSTANCES contain only one substance
The two types are element and compound each will have its own unique chemical and physical properties

4. Elements
ELEMENT- smallest particle of matter that retains its chemical identity
Elements cannot be separated into a simpler substance by a chemical change
We use symbols for the names of elements
1 or 2 letters, the first letter always is Capital and the second is lowercase
See periodic table

5. Compounds Compound- 2 or more elements that are chemically combined
For example water is a compound
Made up of hydrogen (H) and oxygen (O)
H2O

6. Mixtures Mixtures are a combination of 2 or more pure substances
Mixtures can be separated physically based on different physical properties

7. Mixtures (cont)
Heterogeneous mixtures – has visibly different parts or phases (not consistent)
granite, chocolate chip cookies
Homogeneous mixture (solutions) - no visibly different parts or phases (consistent throughout entire solution)
Saltwater, air

8. Classification of Matter

9. Essential Questions What is a pure substance? What is an element?
What is a compound?
What are the two types of mixtures and how can you tell them apart?
How can you tell the different classifications of matter apart?

10. 1.2 Tracked Assignment P 47 #11-14 P 52 #20-21, 24