Quick Blog Question

Quick Blog Question

The difference between metals and nonmetals is that metals produce properties such as luster, ductility, conductivity, and malleability ( iron, tin, zinc ), and nonmetals are material possessing properties such as brittleness, lack of luster, and non conductivity, and they are often insulators ( carbon and oxygen). Some metals that I see are lead in pencils, zinc in sunscreen, and calcium in my vitamin and food. 

Nonmetals that I encounter are carbon and oxygen which I breathe in. 

Quick Blog Question

Quick Blog Question

We drink bottles water because it is marketed as being clean/pure water. The consumer may not like the taste of tap water and may assume that bottled waster is safer to drink. Therefore, the consumer will buy bottled water because they think its safer to drink and its more tasty.

Scenario 1 and Scenario 2 of River Wood 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.

Quick Blog Question

Quick Blog Question

The most important idea I have learned in Unit 1 is everything surrounding water: how to distill water, the different molecules and charges that are associated with water, water use in the United States, density of water in different states, mixtures and solutions, and symbols, formulas, and equations.

1SDS 18-22

1SDS 18-22

18. What would happen to the Earth's hydrologic cycle if water evaporation suddenly stopped would be that no water would be going into the atmosphere so there would be no precipitation and the hydrologic cycle wouldn't exist.

19. The hydrologic cycle would be different because water as a solid is when there is precipitation in the form of hail or snow, water as a liquid would be water in the ocean, rivers, or lakes that can be evaporated or precipitated, and water as a gas would be water vapor that was evaporated.

20. The EPA limits the concentration of THMs to 80 ppb because THM is chloroform, a carcinogen which is a substance that is known to cause cancer.

21. The foul-water lab process can be related to the natural purification of water because in both use the sand-filtration method, charcoal adsorption and distillation can relate to bacteria that convert dissolved organic contaminants into a few simple compounds and evaporation, which removes nearly all dissolved substances.

22. 1 day: 1ppm fluoride
      1 week: 7ppm fluoride
      1 year: 364 ppm fluoride

1SDS 1-9, 18-22

1.

Evaporation: changing from the liquid state to gaseous state.
Precipitation: moisture falling from the atmosphere as rain, snow, sleet, or hail
Run off: water from the mountains rushing downstream

2. Evaporation: followed by condensation, removes nearly all dissolved substances.

    Bacterial action: converts dissolved organic contaminants into a few simple compounds.

    Filtration: through sand and gravel removes nearly all suspended matter.

3. The properties of aluminum hydroxide is related to the process of fluctuation because aluminum hydroxide traps and removes the suspended particles, a process called flocculation.

4. Calcium oxide is sometimes added in the final steps of municipal water treatment to remove suspended particles.

5. As much as 1 ppm of flu ride ion may be added in the fluoridation process because the fluoride ions can reduce tooth decay.

6. The advantages of chlorinated drinking water compared to untreated water is that chlorinated water is much safer because chlorine kills disease-producing microorganisms.

7. The disadvantage of using chlorination in water treatment is that under some conditions, chlorine in water can react with organic compounds produced by decomposing animal and plant matter to form substances that, if in sufficiently high concentrations, can be harmful to human health.

8. Water from a clear mountain stream may require chlorination to make it safe for drinking because the water could contain harmful bacteria and heavy metal ions that could be harmful to drink, so chlorine is needed to kill disease-producing microorganisms.

9. Two alternatives to the use of chlorination in municipal water treatment are: 

    Charcoal filters: activated charcoal can remove most organic compounds from water including THMs.

    Sand filtration: Removes big redundant material from the water.

1

Solubility Curve Lab

Solubility Curve Lab

Dr. Forman

July1, 2013

Kourosh

Julia

Clemmy

Abstract: In this experiment, we conducted an experiment to see the solubility for succinic acid (C₄H₆O₄), which is a molecular compound. Our team Hydrogen worked very well together. We assigned each person different tasks to do, and we worked well with the other team too.

Procedure:

1. Add 300 mL of water to a 400 mL beaker. 

2. Heat the beaker to 45^oC the first time 55^oC the second time, and 65^oC the second time.

3. Place 4g-5g of succinic acid in each of two test tubes.

4. Place each tube in the warm-water bath and stir every 30 s for 7 min. Monitor the temperature.

5. At the end of the seven minutes, carefully decant the clear liquid from each test tube into a separate, empty test tube.

6. Carefully pour the hot water from the beaker into the sink.

7. Prepare an ice bath by filling a new 400-mL beaker.

8. Place the two test tubes containing the clear liquid in the ice bath for two minutes. Stir the liquid in each test tube gently once or twice. Remove the test tubes and allow the test tubes to sit at room temperature for 5 min. record your observations.

9. Let the crystals settle.

10; Measure the height of the crystals collected in mm. Record your average crystal height.

Results:

This is the result of the class. Hydrogen's results were off because we probably didn't measure correctly, or we could've added too much succinic acid. The class average at  45^oC was 14.1 mm, at 55^oC  was 101.3, at 65^oC was 102.8. It was useful to collect the class average because it was useful to see that our groups data was off.