1. Bell Work: Quick Review Sodium Sulfate is used to manufacture detergents….identify a) Write the formula for sodium sulfate b) Decide if it is ionic or covalent c) Calculate the percent mass of sodium in sodium sulfate

2. Section 10.5 Formulas of Hydrate Page 70 of Scientific Notebook

3. SPI’s/CLE’s: CLE 3221.Inq.5 Compare experimental evidence and conclusions with those drawn by others. SPI 3221 Inq.2 Analyze the components of a properly designed scientific investigation. SPI 3221.Math.4 Apply measurement unit relationships including Avogadro’s number, molarity, molality, volume, and mass to balance chemical equations. SPI 3221.3.5 Convert among the following quantities of a substance: mass, number of moles, number of particles, molar volume at STP. CLE 3221.3.3 Explore the mathematics of chemical formulas and equations.

4. Objectives: Define Hydrates Name/write formulas for hydrates Use Data to predict the formula of a hydrate

5. What are hydrates? Solid ionic compounds in which water molecules are trapped.

6. How are formulas written for hydrates? In the formula of a hydrate the number of water molecules are written following a dot Example: Na 2 CO 3 10 H 2 O Naming Sodium Carbonate decahydrate Mon o 1 Di2 Tri3 Tetra4 Penta5 Hexa6 Hepta7 Octa8

7. Analyzing a Hydrate Step One: Weigh the Hydrate Step Two: Drive Off Water by Heating Step Three: Weigh the Hydrate(without water) Step Four: Calculate the moles Page 72 of Scientific Notebook

8. Problem Solving/Guided Practice A mass of 2.50 g of copper sulfate is heated. After heating the copper sulfate has a mass of 1.59 g. What is the formula and the name of this hydrate? Please Turn In Your Text Book To Page 352

9. Independent Practice(Group Collaboration) Page 353 Problem 74(groups 1, 2, 3) Problem 75(groups 4, 5, 6 )

10. Read Page 354 Ticket Out The Door Write a least 2 uses of hydrates……

11. Bell Work: Pre-lab ActivityPre-lab Activity Write Down the First Five Parts of your lab reports in the section two of your notebooks. I. Determining the Formula of a Hydrate II. Purpose: How can you determine the moles of water in a hydrated compound? III. Hypothesis: IV. Materials: V. Procedure:

12. Questions(for Students) What is the Law of Conservation of Matter? Why is the mass less after heating the hydrate? Where did the water go? What could happen to cause an error in this experiment?

13. Safety Precautions Please Do Not Eat/Drink in the Lab Wear safety goggles at all times Do not inhale the fumes….do not inhale the fumes Crucible/hot plate, etc. are hot, handle with care Do not play in the laboratory area.