Law of Conservation of Mass

What is this infographic asking you to do / think about?

What does it mean to "conserve"?

Don't Break the Law

• What law is discussed? 
• How can the law be "broken"?

Content Objectives:

1. Explain the Law of Conservation of Mass
2. Design an experiment that can test the Law of Conservation of Mass.

Language Objectives

1. Using full sentences, describe connections between the law of conservation of mass and past experiments.

December Process Words

• Adapt (6, 7, 8th grade)
• Verify (6, 7, 8th grade)
• Establish (7, 8th grade)
• Relate (7, 8th grade)
• Assess (8th grade)
• Clarify (8th grade)

Upcoming Schedule:

• Thursday 12/6: Conservation of Mass
• Monday 12/10: Mixtures - What are differences between reactions and mixtures?
• Wednesday 12/12: Assessment (Reactions / Mixtures)
• Friday 12/14: Inquiry Day! (see bottom of post)
• Tuesday 12/18: Inquiry Project Update

Law of Conservation of Mass

How can your group test the Law of Conservation of Mass?

Create an experiment using the baking soda / vinegar reaction to test the law of conservation of mass.

Task

1. Modify the lab to test the law of conservation of mass.
2. Put the law of conservation of mass into context of this experiment. What happened? How was mass "conserved"?

Whiteboards will be used to present experiment and discussion.

• Brief overview of experiment
• Data table
• Observations
• Connection to Law of Conservation of Mass.

Exit note: Return to the candle experiment. How can you use this experiment to describe the Law of Conservation of Mass?

Support Reading: Chemical Interactions (chapter 3.2, p.78-84)

Review Questions
p. 84 (1-6)

Inquiry Update

On December 14, we will collect data for the last time this calendar year. On that day the following items are due in one report (Please slowly go through the rubric to make sure you capture all of the items! If you have questions, please ask):

1. Background Section - this section provides the scientific basis for your project while also grounding it on the AST campus. Your question should be in this section.
2. Hypothesis - In the background, you let the reader know the general idea of what you are investigating. Now, let us know your hypothesis.
3. Variable List
4. Procedure

You will then collect data on December 14. By class on Tuesday, Dec 18 your data tables should be updated on both the wall outside of the classroom and your web page. Your report for the day of sampling should be updated on your web page.