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Before we put the penny in the vinegar it was dirty. After we put the penny in the vinegar it was shiny and the color of rose-gold.

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Station 1
The penny was dirty and we put it in baking soda and vinger and it was a chemical change

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It was a chemical change because you can't make the celery a light green color anymore, there was 3 different beakers one was with regular water, another one with blue water, and the third one was red. Each celery dyed the color they were in

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So we started with a rusty old penny then we mixed it with vinegar and salt. Then when we were done mixing it had to sit a little and when that was over the salt and vinegar made the penny a shinny new penny.

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I observed that when we started with just water with baking soda it was cold, but we but chloride in it and the temperature went up that is why it's a exothermic reaction.

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When the penny was in the vinegar and salt it did not show any change but we had to let it sit in the vinager and salt and when we took out the penny from the beaker the penny was shiny and it wasn't dirty no more.

This is a chemically change because you cannot take it back to the dirty penny again.

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I observed that when you mixed vinegar and baking soda, the cup would be overflown, and the cup got colder.Because it got colder, this is an endothermic reaction.

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There was clear water with the amount of 100 mL. We had to put food coloring, which sunk to the bottom. 2 minutes later, the water was completely red. CHEMICAL CHANGE because it is a new substance and cannot go back to the original substance.

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The mixture was green, bubbly, foamy, and fluffy after we added all of the ingredients to the cup.
CHEMICAL CHANGE
A new substance was made.

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The red food coloring sunk to the bottom of the water and after a few minutes all the water was red. This was a chemical change because you can't get the water back to the way it was before.

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Temperature: 22 c

What happened: The temperature started to raise

Final Temperature: 41 c

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The red food coloring sunk to the bottom of the water and after a few minutes all the water was red

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The mixture was green, foamy, bubbly when we added all the ingredients in the cup so it was a chemical change because a new substance was made

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When the food coloring mixed with the water, the water turned red.

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There was alot  of bubbles when you blow in the straw but when you stop the bubbles disappear and the water goes back to normal. That was a physical change because the water turned back to normal.

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The clear water was making the selery and the red and blue and it made it change the same color as the food coloring

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When you first blow in the straw, there was lots of bubbles, but then everything turned back to normal. This is a physical change because the water only turned into bubbles for a little bit, but the water is still water.

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This was a chemical change because you can't make the celery the light green color anymore. There were 3 different beakers one was with regular waters, another with blue food coloring in the water and the third one was red. When the celery was left in those colored beakers the celery got colored the color that was in the beaker.

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I had lots of bubbles in my mouth and the toothpaste seemed to be less minty.
CHEMICAL CHANGE because a gas was produced and the original toothpaste was no more.