1. Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding. Strotntium (Red) and Sodium (Yellow)

2.  Due: page 359-363 All Questions  Due: Lewis Dot Structure worksheet  Lab reports and power point presentations due in one week  Homework: Read Pages 397-401 complete all questions and activities  USA TestPrep

3. 1. Draw an Aluminum atom using Bohr’s model.  (Atomic # = # p+), (# p+ = # e-), (n = mass# - p+) 2. How many valence electrons does it have? 3. Draw a Lewis Dot Diagram for Aluminum. 4. How many unpaired electrons are there? 5. How many bonds can Aluminum form? 13 Al Aluminum 27 13 p+ 13 e- 14 n Period 3 13 p+ 14 n 3 Al 3 3

4. SUBSTANCES AND MIXTURES L.O. SWBAT distinguish between mixtures and pure substances. SC.8.P.8.9 Distinguish among mixtures (including solutions) and pure substances.

5. VOCABULARY WordDefinitionExampleDrawing Pure Substance Elements Compounds Mixture A single kind of matter that has a specific makeup or composition. Water, Sugar, Salt Elements are made up of only one type of atom. Phosphorus Two or more different elements chemically combined Two or more substances that are together in the same place, but their atoms are not chemically bonded. Candy mix

6.  What do you think Mixture / Pure Substance?

8. VOCABULARY WordDefinitionExampleDrawing Homogeneous Mixture Heterogeneous Mixture Evenly mixed so you can’t differentiate the parts by simply looking at the mixture. Lemonade A mixture in which you can see the different parts and can easily separate them out. Trail Mix and beach sand

10. 1. First label each mixture on page 393 2. Cut out the pictures on page 393 and place the substance in the correct category.

11.  What is the difference between an element and a compound?  What is the difference between an pure substance and a mixture?  What is the difference between heterogeneous and homogeneous mixture?

12.  Read pages 397-401 answer all questions complete all activities