Housekeeping: Today we're doing two short labs. I am more concerned about data collection right now. We will worry about the report later. These are required practicals, so we must get them done today.
Agenda:
1. Lab #1: Empirical Formula of magnesium oxide
2. Lab #2: Limiting & Excess Reactants
Lesson Objectives:
1. Calculate the empirical formula of an oxide
1. Identify the limiting and excess reactants in a chemical reaction.
2. Calculate percent yield using lab data.
Content Review:
Links: 1.3: Reacting Masses & Volumes
Textbook Readings: Section 1.3; p. 28-32
Student Missions:
Mission 1: Empirical Formula of Magnesium Oxide. Look on pages 21-22 of the text. We are going to do this simple experiment. You need to be able to diagram your setup, which won't be exactly as shown in the text. We are going to use an alcohol burner instead. Follow the procedure in the book, but I will provide specific steps for you to include. There will be a data collection matrix on the board for your use.
Mission 2: Limiting & Excess Reactants with Zn/HCl. We will immerse a piece of zinc into a test tube with some hydrochloric acid. The reaction will run for 2 minutes and then we will measure the amount of products produced using what we've learned about LR/ER. There will be a data collection matrix on the board.
Homework: Complete the calculations required for each lab. Finish filling in the data collection matrix.
Agenda:
1. Lab #1: Empirical Formula of magnesium oxide
2. Lab #2: Limiting & Excess Reactants
Lesson Objectives:
1. Calculate the empirical formula of an oxide
1. Identify the limiting and excess reactants in a chemical reaction.
2. Calculate percent yield using lab data.
Content Review:
Links: 1.3: Reacting Masses & Volumes
Textbook Readings: Section 1.3; p. 28-32
Student Missions:
Mission 1: Empirical Formula of Magnesium Oxide. Look on pages 21-22 of the text. We are going to do this simple experiment. You need to be able to diagram your setup, which won't be exactly as shown in the text. We are going to use an alcohol burner instead. Follow the procedure in the book, but I will provide specific steps for you to include. There will be a data collection matrix on the board for your use.
Mission 2: Limiting & Excess Reactants with Zn/HCl. We will immerse a piece of zinc into a test tube with some hydrochloric acid. The reaction will run for 2 minutes and then we will measure the amount of products produced using what we've learned about LR/ER. There will be a data collection matrix on the board.
Homework: Complete the calculations required for each lab. Finish filling in the data collection matrix.
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