Thursday, January 20, 2011

Homework

1. Clorox Fabric spray
-water
-sodium carbonate
-sodium chloride
-sodium hypochlorite

2. 409 carpet and spot strain remover
-water
-hydorgen peroxide
-isoproply alcoohal
-alcohal ethoxylate
-fragrance
-sodium hydroxide

3. Pine sol
-water
-etholated alcohals
-alkl sulfonate
-dye
-fragrance
-hydoropropynl methycellulose
-preservative
-sodium carbonate

4. Tilex stain remover
-water
-sodium hypochlorite
-fragarance
-lauramine oxide
-potassium iodide
silicone emulsion
-sodium hydoxide
-sodium silicate

5. Beer
-water
-malt
-hops
-yeast

6. coffee
-caffeine
-tannin
-thaimin
-spermidine
-xanthine
-citric acid
-chlorogenic acid
-spermine

7. peanut butter
-vitiman e
-magnesium
-folate
-dietary fiber
-arginine
-antioxidant coumaric acid


8. cotton candy
-sucrose

9. butter
-mono saturated fat
-saturated fat
-cholesterol

Day Seven

Observations in glasses

#1 NEON
-yellow
-red
-orange
-rainbows
-vivid colors

#2 HELIUM
-rainbows are a little blurry this time
-more red than other color
-8 lines going up sides

#3 NITROGEN
-lots of lines on the parralel sides
-yellow

#4 CARBON DIOXIDE
-rainbow lines on top and bottom
-star/cone rainbow lines

#5 ARGON
- a lot of purple lines
-long lines of differnt colors



This was a cool observation experiment in order to see how differnt atoms put off differnt light through electrons.

Day Seven

Write the formula for Tums? How does Tums chemically react with water and stomach acid?
CaCO3  is the active ingredient in tums. This chemical dissolves in water as a negative charged bond to react with acids and water.

 
How many Tums are needed to neutralize a can of coke?
I am unsure of the exact number, we would need to do ane experiment for this! But my guess would be about 4 or 5 tums.

Day Seven

Reflect on the expansion of water and salt water experiments you and your classmates performed. What are some of the interesting results and struggles with this experiment.

Relate your thoughts on this experiment to the scientific question "Is the earth warming?"


Some interesting things with this experiment, and something many of us found in common was that it was difficult to measure the ice. Overall, we found that adding salt to the water lowers the temperature of the ice. It was difficult to do the experiment because originally we wanted to take it out after 15 minutes, but that was not enough time. So instead we waited 30 minutes and this worked out well. The difficulties of this experiment were all things that normal scientists go through: trial and error! It was toughest to measure the last one because this was when the water was frozen over the most so we had to poke a hole in t. Poking a hole in the ice probably had an effect on the measurements, and lost a few centimeters in there. This puts our experiment in a tight situation because it's not totally reliable. Comparing results to other classmates is helpful, in seeing if we had similar results. But on the other hand, everyone experiment was done a little differently so that makes it hard to compare results. It's important to know all of the different ways people think up experiments.

In relation to global warming, I would say that this experiment helps only a little bit in understanding the harm we are doing to the earth. Global warming is the increase in average temperature of the Earths surface due to the trap of heat and light from the sun. Just as we did in our experiment, the temperature was being affected. With global warming, the longer we don't do anything about it, the more it is going to be affected. The sun is beating down on the earth's surface, heating it up. The ice was in the freezer for a period of time, cooling it down an freezing it. The cold is getting trapped in our experiment, like the sun is getting trapped in the earth and warming it.  It is hard to understand what is happening to the earth because there are many scientists out there, trying to measure it in different ways. The earth's temperature changes constantly due to the seasons, and this also makes it tough to measure.

Wednesday, January 19, 2011

Homework

Liquid
Ph Level
Deodorant
4
Proactive solution toner
6
Mouthwash
6
Solumel Stain Remover
8
Spit
8
Pickle juice
6
Vodka
6
Beer
6
Lemonade
4
Clorox bathroom cleaner
10




Experiment
We than went on to make an experiment with the pH levels in finding how to neutralize the level of stain remover. We decided to mix the stain remover solumel with the antacid tums. We chose solumel because this had a pretty high pH level of 8. We found that in order to neutralize the solumel all we needed was ¼ of a tum. This put the pH level at 7, and that is the neutral level. Adding more tum does not change the pH level of solumel, the solution stays neutral no matter what.

Antacid amount (Tums)
pH of Solumel
¼ of tum
7
½ of tum
7
¾ of tum
7
1 tum
7

Day Six

What is more acidic, ph3 or ph4?

Ph3 is more acidic than ph4 because it is closer to "0". It is ten times more acidic than ph4 due to the logarithmic scale it is based upon.

Day Six

Show an image or animation or description of what is happening when water dissolves NaCl.





Why is the freezing point lowered when salt is added to water?
The salt gets in the way of the water molecules, making it harder for them to move. When salt is added to water, it forms crystal molecules. They almost act as if they are in the way and block the area for it to freeze. As the temperature decreases, water molecules can attach and crystallize .