Metal v Nonmetal Lab Report

Homework due Tuesday, July 9

1)

a. Physical property

b. Chemical property

c. Chemical property

d. Physical property

2)

a. Physical property

b. Physical property

c. Physical property

d. Chemical property

3)

a. Chemical change

b. Physical change

c. Chemical change

d. Physical change

4)

a. Chemical change

b. Chemical change

c. Physical change

d. Physical change

5. A is a chemical change because the color of the apple, which turned brown; it is also permanent. B is a chemical change because if they loose their charge, thermal energy has been given off and is not airborne. C is a physical change because the oils are removed, but the material doesn't change. D is a physical change because the salad dressing separates, but the material doesn't change. 

6. 

a. If you are baking chocolate chip cookies, you mix flour, milk, eggs, sugar, and chocolate chips together in a bowl. You must also separate the batter into little circles and put it in the oven to bake. Then the cookies must be taken out of the oven to cool so they are ready to eat.

b. Mixing the ingredients together is a physical change because though the ingredients are mixed, the materials don't change. Baking the cookies in the over is a chemical change because temperature is permanently changed and the cookies become a solid. Taking out the cookies to cool is a physical change because the cookies do not alter, even though they appear to.

7. 

a. metals

b. non-metals 

c. non-metals

d. metals

8. 

a. metal

b. metalloid

c. non-metal

d. metal 

9. Boron (B) and silicon (Si). 

10. 

a. idoine is a nonmetal, so it would shattter.

b. zirconium is a metal, so it would flatten. 

c. phosphorus is a nonmetal, so it would shatter.

d. nickel is a metal, so it would flatten. 

11. Nonmetals do not conduct electricity and are not malleable; thus, nonmetal wiring would not be able to bend or send off electricity.

12. Metals are suitable for use in coins because they do not break; yet, they are shiny, and are malleable. 

Extra Credit due Wednesday, July 3

A couple years ago, Francis Schwarze, who works at the Swiss Federal Laboratories for Materials Science and Technology, made an unusual discovery. He knew that sound travels faster through healthy wood than it does through the soft stuff left by a fungal attack; however, some fungi do not slow sound. Violins are made using many different forms of wood, but Dr. Schwarze had some violins made from wood that was infected with fungi and observed, soon seeing that they sounded just like a Stradivarius. Schwarze is now in the process of standardizing this procedure to create "mycowood". In the years between 1645 and 1715 in Europe, the long winters and cool summers wood grew slowly and evenly, making the wood perfect for a good violin. Dr. Schwarze decided to begin treating wood with different species of fungi, specifically Physisporinus vitreus and Xylaria longpipes. He then applies these fungi to the two most common types of wood used to produce violins: Norway spruce and Sycamore. Schwarze found that these two species gradually degrade the cell walls of the wood, making them thinner, which then results in a different sound. After the walls of the wood have degraded just enough to reach the designated sound, Dr. Schwarze kills the infections with gas, and the violins sounds practically exactly the same! In a study that Schwarze conducted, it was shown that when comparing Schwarze's "mycowood" violin and a Stradivarius violin, a group of violin experts could not tell the difference. Francis Schwarze has solved an issue that has been troubling instrument makers and musicians for over 300 years.

Mycowood

Stradivarius 

Dead Moll's Fingers

White Rot

• This article was significant to me because I have never learned or known anything about violins. It is very interesting because I was never aware that different types of woods make different sounds. I was also interested because I play the piano so all instruments are special to me.

Scenario 1 and 2 of the RIverwood Fish Kill

Scenario 1:

• During the month of August, there was an unusually high amount of water in August. Because of this high amount of rainfall and Snake River flow, there was a high amount of pesticide (.08) in the month of September because of the pressure of the rainwater that washed the pesticides into the river during the month of August.

Scenario 2:

• During the month of September, there was an unusually high amount of rainfall (60.10 mm). In addition, there was a high amount of nitrate 20.000 ppm. September 1 there was a 18.00 mm of rainfall and a 14.000 ug/L of organic carbon. The rainwater washed the nitrate from the soil into the river that had a fatal affect on the fish in the river.

Blog Question

• We drink bottled water because out of all water produced for drinking, it is considered the most pure and the safest to drink. This is because it comes from natural sources and is produced in a bottling plant. Other water, like tap water or distilled water, may also contain dissolved gasses minerals that some people do not taste good or are health risks to the human body. 

HW due Tuesday, July 2

1. 

2. 

a. Evaporation and then condensation, which gets rid of almost all dissolved substances. 

b. Bacterial action changes dissolved organic contaminants into a few simple compounds. 

c. Filtration through sand and gravel gets rid of almost all suspended matter. 

3. Floculation is the process where the alum and slaked lime react to form aluminum hydroxide.

4. Calcium Oxide can be added to neutralize such acidic water, raising its pH to a proper level. 

5. Near 1 ppm of fluoride is added in order to reduce tooth decay. 

6. Adding chlorine to water has helped save countless lives by controlling water borne diseases and killing lethal bacteria in water. 

7. Chlorine in water can react with organic compounds produced by decomposing animal and plant matter to make potentially harmful substances.

8. Water from a clear mountain stream may need chlorination to make it safe for drinking because the there is possibly bacteria and other dangerous contaminants in the water.

9. An alternative to the use of chlorination in municipal water treatment is using an activated charcoal filter. This can excrete most organic compounds from water.

18. If evaporation stopped, then condensation and precipitation would, as well. And if those stop, then the whole cycle will not properly function.

19. The cycle would not exist because it would not be able to "cycle” since there would be no evaporation, etc.

20. EPA only limits the concentration of THMs, but does not completely get rid of it.

21. The processes of evaporation and condensation have a lot in common with distillation. When water passes gravel, sand, and rock, matter is filtered out, just like in sand filtration.

22. 

a. 1 ppm fluoride 

b. 7 ppm fluoride

c. 365 ppm fluoride

Solubility Lab Report