Make observation of excited state of gas.
Tubes with different gases creates different colors. The orange is created by neon lights. When putting on the glasses I see a strip of light of multiple colors around the light. There are a total of seven spectrums. With the different gas that creates a white light I'm seeing the same thing, except there are 8 spectrum lights this time. That one was helium. This one is a purple light and I'm seeing nothing.. I had to move to get closer and saw a line strip. Carbon dioxide is a light blueish color and with the glasses it creates thin spectrum that are different from the others.
With neon there are 10 protons and 10 electrons so this is why we see more light.
Thursday, January 20, 2011
Activity 2 1/20/2011 Antacids
Write the formula for Tums? How does Tums chemically react with water and stomach acid?
CaCO3-->Ca+CO3
CO3+H----->HCO3+H------>H2CO3--------->H2O+CO2
Carbonate Bicarbonate Carbonic <------- Carbon dioxide gas
Baking Soda Acid
CaCO3-->Ca+CO3
CO3+H----->HCO3+H------>H2CO3--------->H2O+CO2
Carbonate Bicarbonate Carbonic <------- Carbon dioxide gas
Baking Soda Acid
How many Tums are needed to neutralize a can of coke?
Quite a bit of the tums to make the pH changes.
Activity 1 1/20/2011 Experimental design and conclusion
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.
The experiment with water and salt water was fairly easy and the outcome was easy to observe and report my findings on. I had done the experiment a little different then some people in the class. I tested the water expansion and how long it took the water to freeze based on how much salt was in it. Although, I did not report my findings on the time factor I still learned that salt water takes longer to freeze. The struggle with the experiment was probably taking the temperature I was unable to keep the thermometer inside of the cups becausee my freezer was not big enough. So I had to keep taking temperature periodically as time progressed and was unable to take temperatures once the water was fozen.
The experiment with water and salt water was fairly easy and the outcome was easy to observe and report my findings on. I had done the experiment a little different then some people in the class. I tested the water expansion and how long it took the water to freeze based on how much salt was in it. Although, I did not report my findings on the time factor I still learned that salt water takes longer to freeze. The struggle with the experiment was probably taking the temperature I was unable to keep the thermometer inside of the cups becausee my freezer was not big enough. So I had to keep taking temperature periodically as time progressed and was unable to take temperatures once the water was fozen.
Relate your thoughts on this experiment to the scientific question "Is the earth warming?"
The debate of the earth warming or not warming has gone on for a long time, there have been movies and numerous of people talking about this question. From what I have heard and read for my self, evidence proves that the earth is in fact warming due to the increase in greenhouse gases. Although, in my personal opinion it's freezing outside and I highly doubt that we should be very concerned about the earth warming. Based on my classmates reportings of the experiments they conducted the waters that they tested froze outside.
Wednesday, January 19, 2011
Homework 1/19/2011
Use the pH paper to develop a table and graph of the pH of common things around your home.
Think in terms of at least 10 different liquids.
Develop an experiment to see how much antacid is needed to neutralize an acidic liquid.
I used Tums to neutralize the liquids that were very acidic. It did not take a lot at all being that I only used a small amount of liquid to test it on. Therefore the amount of antacid needed to neutralize an acidic liquid varies on the intensity of the acid and also the amount.
Think in terms of at least 10 different liquids.
| Liquids | pH Level |
| Orange Juice | 3 |
| Milk | 6 |
| Nyquil | 7 |
| Vodka | 6 |
| Coors light beer | 5 |
| Sierra Mist | 3 |
| Dr Pepper | 3 |
| Water | 7 |
| Gaterade | 4 |
| Lemonade with Vodka | 2 |
Develop an experiment to see how much antacid is needed to neutralize an acidic liquid.
I used Tums to neutralize the liquids that were very acidic. It did not take a lot at all being that I only used a small amount of liquid to test it on. Therefore the amount of antacid needed to neutralize an acidic liquid varies on the intensity of the acid and also the amount.
Activity 5 1/19/2011 pH levels
pH3 or pH4
1. Which one is more acidic?
The lower the pH the more acidic it is. So pH3 is more acidic.
2. And by how many times?
pH=-logH+
4=-logH+ 10,000
3=-log+ 1,000
2=-log+100
1. Which one is more acidic?
The lower the pH the more acidic it is. So pH3 is more acidic.
2. And by how many times?
pH=-logH+
4=-logH+ 10,000
3=-log+ 1,000
2=-log+100
Activity 4 1/19/2011 Dissolving
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?
Salt is used to melt ice.Adding salt disrupts the equilibrium. The salt molecules dissolve in the water, but do not attach easily to the solid ice. There are fewer water molecules in the liquid because some of the water has been replaced by salt. This means that the number of water molecules able to be captured by the ice goes down, so the rate of freezing goes dow. The rate of melting of the ice is unchanged by the presence of the salt, so melting is occuring faster than freezing
Activity 3 1/19/2011 Crystal Structures
Show crystal structures fo NaCl (sodium chloride)and CaCO3 (calcium carbonate). what is the melting point for these two materials.
Melting Point:
801° C 825°C
Melting Point:
801° C 825°C
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