1. Pure Substances and Mixtures

2. Review from Last Week… Did you…?
Complete the worksheet on the Particle Theory of Matter?
Put your name on it?
Put it in the pass in bin?

3. Matter in Our World Do the reading silently
Highlight (or circle/underline) words that you feel might be important
What terms did you come up with?

4. Matter
Molecules

5. Pure Substances Elements
A pure substance containing only one kind of particle
An element is always uniform all the way through (homogeneous)
A element cannot be separated into simpler
there are over 100 different elements that each have a unique structure; classified on the periodic table

6. Pure Substances Compounds
A pure substance containing two or more different kinds of atoms
The atoms are chemically combined in some way
A compound is always homogenous
Compounds cannot be separated by physical means (separating a compound requires a chemical reaction)
The properties of a compound are usually different than the properties of the elements it contains.

7. Pure Substances
Molecules: When 2 or more atoms are combined together (maybe from the same element ex: O2)
All Compounds are molecules, but not all molecules are compounds

8. Pure Substances

9. Is it a…element, compound or molecule?
A) Compound
B) Mixture of Element and molecule
C) Mixture of element and compound
D) Compound
E) Molecules
F) Element
G) Mixture of Compounds
H) Element
I) Compound

10. Mixtures
Two or more pure substances or elements NOT chemical combined (Physically mixed)
No reaction between the substances

11. Mixtures
Heterogeneous Mixture: mixtures that have two or more components that remain VISIBLE even after they are mixed

12. Mixtures
Homogeneous Mixture: mixtures that have two or more components that appear like only ONE substance (Solutions, alloys)

13. Mixtures Cont’d
Mixtures can be separated into their components by chemical or physical means
The properties of a mixture are similar to the properties of its components.

14. Heterogeneous or Homogeneous?
Lemonade
Paint
Soda with Carbonation
Salt water
Granola Cereal
Ketchup
Fruit Yogurt
Chicken noodle Soup
Beach Sand
Salad
Salted and Buttered Popcorn
Milk
Crayons with paper wrappers
Chocolate chip Cookies
Jelly Beans

15. Elements Poster Take home assignment Directions
Take a look at the periodic table and think of an element you might like to research
Assigning elements
DUE DATE- DECEMBER 15TH, 2015