Foaming and Fizzing

Kia ora bloggers,
I'm back with a new blogpost. This term our schools focus is Up, up and away. At the start of the week my class did an experiment called foaming and fizzing. We had to taste the vinegar and baking soda separately and we also had to taste it when the vinegar and baking soda were mixed together. Once we had done the experiment we had to write a report on the experiment. Here is the report:

B E G I N N I N G	TITLE	Yuck and Yum!
	QUESTION.	If we mix vinegar and baking soda together will we observe some kind of reaction?
	THESIS.	Vinegar tastes sour and it is a liquid. Baking soda is a solid, soft white powder and it tastes salty and horrible. They are both food substances but based on their different taste, they must be chemically different. So, if they are mixed together, there might be a chemical reaction.
	HYPOTHESIS.	We predict that when we mix vinegar with baking soda an observable reaction will occur. We might see and hear an explosion, fire, foaming, bubbles, fizzing or something else. The resulting mixture might look or taste different. There might even be a difference in the size of the materials.

M I D D L E	EQUIPMENT AND MATERIALS:	Baking soda Vinegar Container for mixing Teaspoon for mixing
	PROCEDURE	Step 1: Pour some vinegar into a container to a depth of about 2cm. Step 2: Use a teaspoon to measure in half a teaspoon of baking soda. Step 3: Mix with a teaspoon. Step 4: Observe and record what happens.
	OBSERVATIONS:	At step 2 the mixture started to fizz. A fizzing sound was heard, bubbles were seen to appear in the mixture and the materials rose higher in the container. At step 3, when the materials were mixed, even more bubbles appeared and the volume of the materials in the container rose even higher. When the mixture was tasted, the taste was unpleasant and it was similar to the baking soda.

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ANALYSIS AND CONCLUSION

The goal of this experiment was to see if an observable reaction would take place when vinegar and baking soda were mixed together. The result of our experiment prove that our hypothesis was correct. We predicted that there would be an observable reaction, and there was. There was lots of foaming and fizzing happening and bubbles appeared which means a gas must have been produced. A quick check online showed us that the gas was carbon dioxide.

The last week

Hola, or should I say adios?
This is the last blog post for Term 2.

I have had an amazing term learning about animals, doing new things and fantastic art. I would love to say all the things I did, but that would take too long. So instead, I made a little presentation that shows some of my work.