Chemical Reaction Experiment

1. Describe characteristics of different chemical reactions. (PS2.8A)

You can see now, what happens to the chemical when it was mixed with other liquid like water, vinegar and etc.

Matches:

The chemical in matches is potassium chlorate. Potassium chlorate is at the head of the match. When the match touches phosphorus and chlorate in a small amount, it will form something that can cause an explosion (fire) which is caused by friction.

Acid-base reaction:

This is what happens when the baking soda mixed with vinegar: it creates Co2 chemical (which is gas). This is called "acid-base reaction". According to PH scale, the vinegar is acid and the baking soda is the base and when they are mixed together, it creates the chemical reaction or Co2. The chemical reaction is called "acid-base reaction."

Color change:

When Iodine mix with baking powder, the color changes to purple. It was white before. When the color changes, it is also called a chemical reaction or acid-base reaction.

2. Describe the chemical makeup of baking powder. (PS1.8B)

We identify the unknown substance by looking at the color, smell, chemical reactions. And the chemical that made baking powder is baking soda and cream of tartar. We first test by putting baking powder with water and vinegar too. Then, we observed what happened. When baking powder is mixed with water, it creates Co2 chemical. Baking soda and cream tartar + baking soda mixed with water will also create bubbles (Co2). We figured out that it was baking powder because it has the same reactions as baking powder.

3. Describe the process you used to determine the unknown substance.(SI1.A)



We identified the unknown substance by looking the smell, color, chemical reactions of the mystery mixture. And we looked through the notes we have from above (the chart). Then, we observed how the unknown substances react to other chemical and match them through our notes of other chemicals like baking soda, baking powder, cream of tartar, and corn starch. And we found out that the unknown substance Baking Soda. The substance have many reactions when mixing with water such as there were no bubbles and the temperature had changed. That matches baking soda perfectly. This is what happens when the baking soda mixed with vinegar: it creates Co2 chemical (which is gas). This is called "acid-base reaction". According to PH scale, the vinegar is acid and the baking soda is the base and that creates the chemical reaction. The chemical reaction is called acid-base reaction. (talks about acid-base again)

4. Describe the process you used to determine which two substances make up baking powder. (SI1.A)

We have to find out which chemical makeup baking powder. There were three choices: baking soda, cream of tartar, and corn starch. We first start off by start testing out by mixing the unknown substance with water and vinegar. In the end, we found out that baking powder was made out of cream of tartar and baking soda because whenever we mix the liquid with cornstarch, it would eventually become oobleck-like substance. And cream of tartar + baking soda also produces Co2 when we add water or vinegar. It has the same reaction as baking powder.

5. What are some important safety considerations for a Middle School Chemistry lab? (SI.1A)
- no horse play
- no running
- look where you are going
- no eating
- no throwing things 
- follow directions
- do not do anything that the teacher didn't say to do
- hands to yourself