Droehm Team:
Learning Is a Journey
Quest 5: Chemical and Physical Reactions
Posts 7 - 10
Q5P7: Reassess
Now that you have done a bunch of learning about the learning targets in this unit, let's reassess on ALL the skills. In order to reassess, you will need to get out your paper in your binder that has all of the learning targets on it. Reassess on skills CH.1 - CH.7. (If you lost your page, you can make a copy of this document. We will be reassessing again throughout the unit.)
Once you have reassessed, go tell Mrs. Roehm which bullet point from the CH.6 Learning Target you made the most growth in and which bullet point you still need to work on. (You are reassessing ALL the skills, but you are only commenting in the discussion about skill CH.6.)
Q5P8: Chemical or Physical Change Group Challenge
Procedure:
For each of the Google Forms below, you must go IN ORDER.
For #1 - identify whether each question is a chemical or physical reaction. Your group must discuss your ideas to come to a consensus (agreement on your answers).
DO NOT HIT Submit!! Call Mrs. Roehm over to look at your answers. She will give you some direction before you hit submit. Mrs. Roehm will check your work, but she will NOT tell you which numbers you got wrong, ONLY how many you got wrong. DO NOT HIT SUBMIT UNTIL YOU SHOW MRS ROEHM YOUR ANSWERS.
Your group will then be given time to go back through the questions to decide which items you feel are incorrect. The group makes changes and then clicks Submit.
Repeat that process for the remaining Google Forms. Do NOT just do all the forms. It is important to go through the full process with each form.
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Chemical or Physical Change Part 1
Chemical or Physical Change Part 2
Chemical or Physical Change Part 3
Chemical or Physical Change Part 4
Chemical or Physical PROPERTY Part 5
The benefit of this activity occurs in group discussion both in coming to an initial consensus and in deciding which errors to correct. Below is a group discussing their initial answers. Everyone must participate in determining the answers. Don't let just one or two people make all of the decisions. Below is a video of what the discussions might look like. (By the way, you do not have to record your discussions.)
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Q5P9: Pop Your Top
Complete the first lab station - Pop your top! - from the Chemical Changes Lab Assignment Document in Google Classroom.
Procedure: (Absent Students: Watch the video below)
1. Put on your goggles!
2. Go get a piece of Alka-Seltzer from Mrs. Roehm.
3. Fill the film canister most of the way with water.
4. Drop in the Alka-Seltzer tablet.
5. Quickly put the lid back on. Stand back! The lid should pop up into the air several feet. If it does not, double check to make sure the lid is snapped on tightly.
6. If you quick grab the lid and put it back on, you can get it to work multiple times!
7. Answer the questions for Pop Your Top on your Chemical Changes Lab Document.
Answer the questions for this station on the Chemical Changes Lab Document from Google Classroom. Show Mrs. Roehm your answers before moving on.
Q5P10: Copper Mine, X Men Mania, and Move that Mustard
Complete the last three lab stations - Copper Mine, X Men Mania, and Move That Mustard from the Chemical Changes Lab Document. You should do the lab for one station, then answer the questions, then do the next station, then answer the questions, etc.
Copper Mine Procedure: (Absent Students - look at the pictures and explanation below the directions)
1. Put on your goggles.
2. Roll a piece of aluminum foil into the shape of a small tube.
3. Make sure it is a size that can be placed in the beaker.
4. Fill a beaker with 100 ml of Copper II Sulfate solution (The blue liquid).
5. Add a good amount of salt to the solution and stir. Stop stirring.
6. Pick up the foil with tongs and push the foil in the beaker of Copper II Sulfate.
7. Hold it UNDER the liquid for at least ONE FULL MINUTE.
8. Look closely at the reaction for evidence of a chemical change!
Setup and Materials:
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​The Reaction:
X Man Mania Procedure: (Absent Students - look at the pictures and explanation below the directions)
1. Put on your goggles.
2. Measure about 30 ml of hydrogen peroxide and pour it into a SMALL beaker.
3. Add 1/4 teaspoon of dry, active yeast and stir well.
4. Bubbles will begin to rise to the top of the beaker.
5. Take a skewer and light the pointy end of the skewer. Let the flame burn until it goes out. There should be red embers at the end.
6. Take the hot end of the skewer and hold it completely vertical. SLOWLY lower the skewer into the WHITE bubbles (Avoid the "yeasty" bubbles).
7. As soon as the skewer lights on fire, remove it. Blow out the flame and try again!
Setup and Materials:
The Reaction:
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Initially, oxygen bubbles are produced.
These white bubbles can be used as fuel to ignite the red embers at the end of a wooden skewer.
Move that Mustard Procedure: Absent students - if you have mustard and baking soda in your house, you can do this lab!
1. Squirt about 60 ml of mustard into a small beaker.
2. Add one tablespoon of baking soda and quickly stir the baking soda into the mustard. Do not keep stirring continuously. The key is to stir quickly and STOP stirring! You want to stir vigorously, but you don't want to over-stir.
3. Stop stirring and observe!
4. Rinse out your beaker.Look at the ingredients on the mustard. What ingredient makes this reaction happen?
Important Tip for the Questions:
Vinegar is an acid. Baking soda is a base. When an acid and a base mix, there is always pH change.
Set Up and Materials:
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The Reaction:
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Show Mrs. Roehm your completed lab pages.
