1. CHEMISTRY JANUARY 13, 2015 LAB 09 – PART 2

2. PRE-LAB TURN ON COMPUTER TAKE THE PAPER AND ANSWER THE PRE-LAB QUESTION – WHAT WILL HAPPEN TO LiBr WHEN IT REACTS WITH WATER? In other words, does it stay together or break apart to form ions?

3. AIM WHAT WILL HAPPEN TO LiBr WHEN IT REACTS WITH WATER?

4. PHET SIMULATION GO TO LABS (link on the left side) Click on the Labs folder Scroll to the bottom and choose Lab 09 – Ionic/Covalent Today we are working on the Micro Tab lab portion

5. PHET SIMULATION Click on the PHET Simulation to launch it Follow the instruction to launch the simulation

6. SALT Do Steps 1-3 Click on the salt (sodium chloride) shaker. – Press the pause button (labeled C) before the salt enters the water. – Record your observation Click the Pause button (labeled C) to unpause. – Record you observation on how the salt behaves once the crystal is in the water (make sure to use the terms “cations” and “anions”)

7. SUGAR Do steps 4-5 Click the “sucrose” bubble in the solute selector and shake the sugar – Press the pause button (labeled C) before the sugar enters the water. Record your observation – Unpause and shake the sugar into the water Record you observation on how the sugar behaves once the crystal is in the water (make sure to use the terms “cations” and “anions”)

8. POST LAB What is the electronegativity value for each of the atoms in salt (NaCl)? What is the electronegativity difference for salt? Based on the rules studied in class, what type of bond exists in salt? What is the electronegativity value for each of the atoms in sugar? What is the electronegativity difference for sugar? Based on the rules studied in class, what type of bond exists in sugar?

9. AIM PROMPT RESPOND TO THE FOLLOWING: – AIM Prompt: WHAT WILL HAPPEN TO LiBr WHEN IT REACTS WITH WATER? – Respond in paragraph form and make sure to use the RACE format.