1.  Why is an advertisement that features a model more convincing than walking into a store and just seeing the outfit on a hanger?  Why does a company need to use different models over time?

2.  Just not these kind of models…

3.  As chemist we are concerned with the connection between Macroscopic: Nanoscopic:  Chemists create symbols and models to explain the nanoscopic interactions that lead to macroscopic phenomenon.

4.  Matter is anything that occupies space or has mass.  It can be classified by its composition as… an element, compound or mixture.

5.  In our model, the following were pure substances: R R 3 Sq Sq 2

6.  Of the following pure substances, which are elements and which are compounds? R R 3 Sq Sq 2

7.  What if our model, didn’t have pictures, only words. How would I be able to identify each of these as either a element or a compound? - R - R 3 Sq - Sq

8.  Turn and talk: - What are the differences between these two models? - Which is a mixture? How do you know? R R & Sq 2

9.  Turn and share your answer to question 14: Explain the difference between a. An atom and an element b. A molecule and a compound

10.  In your notebook, classify each of the following as an element, compound, or mixture: a. Carbon b. Coffee c. Pure Water d. Chocolate chip cookie e. Sodium bicarbonate (NaHCO3)

11. Using a Nanoscopic Model to Create a Definition

12.  Take out lab rubric.  Take 2 minutes to re-read the assignment and rubric.  On a separate sheet of paper, write down the following: a. 3 things that you are confused by b. 2 things that you think you will forget c. 1 thing that you feel comfortable with