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Gas Production Lab

Gas Production Lab. We have already seen a few of the signs or evidence of a chemical change. The Magic Color lab showed us permanent color change and the Curds and Whey lab showed us two liquids can form a solid. Remember the signs of gas production?. Bubbling Foaming Fizzing

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Gas Production Lab

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  1. Gas Production Lab We have already seen a few of the signs or evidence of a chemical change. The Magic Color lab showed us permanent color change and the Curds and Whey lab showed us two liquids can form a solid.

  2. Remember the signs of gas production? Bubbling Foaming Fizzing Or sometimes a smell is produced.

  3. Safety First You will need to wear your goggles. You also need to be very aware of where your body is. DO NOT PLACE YOUR FACE OVER THE FILM CANSITER OR POINT IT AT ANYONE!

  4. Journaling Title: Gas production Guiding Question: What evidence do you see to support a chemical change? Chart:

  5. Step 1 Examine your supplies and write a description of each in the I notice column. Alka seltzer Tablet (Citric Acid C6H8O7 and Sodium Bicarbonate or baking soda 3NaHCO3 ) Water (H2O) Film Canister

  6. The Film Canister During this lab you will need to place some water in the canister, drop in ¼ of an alkaseltzer table, then you need to close the canister securely and place it lid side down. YOU MUST CLOSE IT SECURELY!

  7. Step 2 Make a before drawing of the materials. Break the tablet into 4ths. Fill the canister ½ full with water. Drop ¼ of a tablet into the canister and seal it tightly. Turn it lid side down on the table and get out of the way. Record you observations in the journal and draw a picture of the canister before and after.

  8. What’s going on in there? Fill the canister again ½ full of water. Place ¼ of the alka seltzer tablet into the water but don’t put the lid on. Record your observation in your I notice column. Make a drawing to show what is happening inside the canister.

  9. Step 3 You can use the remaining 2 tablet pieces to take your experiment a step further. Write down what you plan to do with them in the I wonder column and then do it. Be sure to record your observations in your chart, but draw a line to separate the original observations from this set of observations.

  10. Clean Up Pour all the liquid down the drain and wipe up any liquid that is on the table. Rinse out the canister and return it to the bucket.

  11. What happened? The water (H2O) reacts with the Citric Acid C6H8O7 and Sodium Bicarbonate or baking soda 3NaHCO3 ) forming a gas.

  12. Conclusion Write a sentence describing the evidence you saw that proves what occurred was a chemical change.

  13. One step farther. Look back at the materials. What do you think gas do you think was released during this lab? Write a sentence to explain what gas you think it was.

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