Magnesium Meets Chlorine

Goals:
Take careful observations of a chemical reaction occurring.  
Model a chemical reaction showing the law of conservation of matter by using balanced equations and particle diagrams.

Agenda:
Warmup
Lab

Warmup
Create a new entry in your science journal entitled "Magnesium Meets Chlorine," then write down everything you know about magnesium and chlorine based on the periodic table.

Lab

1. Open this lab document.
2. Copy the Procedures, Data/Observations, and Analysis into your science journal under your warmup.
3. Carry out the lab procedures and complete the Data/Observations table.
4. Work with your tablemates to complete the analysis questions. You may want to use a whiteboard to draw models. 

All the Error

Goal:
Complete your lab report.

Agenda:
Kahoot
Outline
Write
Review

Kahoot
Go to Kahoot and get ready to review reliability and validity.

Outline
On whiteboards, list all of the evidence you have available for errors in your experiment. 

• Examples: not enough trials, high %RSD, visual observations of your setup
• Nonexamples: human error, calculation error, measuring wrong

Write

Finish your report by writing your PE paragraph. It should be in the form of a CERER. Be sure to include AT LEAST two sources of error.

Review

Using the rubric on your table, give yourself a score on your completed lab report. Write your score and reasoning on the provided paper. 

Write CER

Goal:
Write a CER based on your lab data. 

Agenda:
Warmup
Outline
Write
Revise

Warmup
Go to Socrative and answer the question: What factors might affect the rate of cellular respiration?

Outline
Work with your elbow partner to outline your claim, evidence, and reasoning. When we make our claim we want to GENERALIZE what the data says about cellular respiration and use REASONING that is connected to scientific concepts. 

Write
Write you CER silently.

Revise
Trade your lab report with your partner. Partner please highlight the following:

• Claim - Red
• Evidence - Green
• Reasoning - Yellow

Discuss 1 strength and 1 weakness of the CER you read with your partner. 

Revise your CER based on commentary. 

Data Collection and Representation

Goal:
Collect and represent your lab data in both a table and a graph with appropriate labels and units. 

Agenda:
Create-A-Table
Finish Lab
Make Graphs
Complete Data/Observations and Results

Create-A-Table
If you haven't already, make a data table in Excel for your independent and dependent variables. Make sure to include:

• Labels and Units
• All Trials
• Statistics (if you have multiple trials)
• Average
• %RSD: Standard Deviation/Average x100

Finish Lab

1. Collect your lab measurements and record them in the Excel table you created.
2. Clean up from the lab. Test tubes in the glass disposal, beakers washed and put on the gray shelves.

Make Graphs

1. Review different types of graphs and when to use them on this website. 
2. Graph your data. Refer to the graphs you made on 1/11 to make sure you have all of the components of a good graph.

Complete Data/Observations and Results

1. Copy and paste the table and graph from Excel into your lab report Google Doc.
2. Write a caption for your graph identifying and describing any patterns you see in the graph.