1. What we did in class today: Tuesday 3.20.12
Reviewed parts of the atom and periodic table concepts from yesterday.
Reviewed states of matter and phase changes
Used models to review pure substances and mixtures.

2. Entry Task: Complete the following entry task:
Draw a diagram of the atom and label the
Nucleus
Protons
Neutrons
Electrons
Energy levels valence level
nucleus
electron
Valence energy level
neutron
proton

3. Review from Mon. 3.19.12 Parts of the Atom Proton= +
Neutron = 0 charge
Electron = -
1st Energy level can hold 2 electrons
Valence can hold 8 electrons.

4. Use the Periodic Table to determine the elements
Use the Periodic Table to determine the elements. Remember, that the number
of energy levels tells us the Period /Row and the number of Valence Electrons tells us
The Group/Column # (1,2,13,14,15,16,17,18)

5. Pure Substances and Mixtures Models
Review Activities
States of Matter/Phase Changes
Pure Substances and Mixtures Models
Clear off your table top.
Lay out the sheets of paper. You should have 3 elements, 2 compounds and 2 different types of mixtures.
Follow the directions to build the models and place them on their correct sheet.
Answer the questions on a separate sheet of paper. Don’t forget to put the title and your name.
You have 15 min. to complete the task.
You’ll watch a Brain Pop clip and then complete the worksheet.
Write your answers on a separate sheet of paper.
If you finish early you’ll finish work from yesterday.