11. They exist as minerals because they are oxidized.
12. a. We used the textbook given. b.Check with your teacher/instructor. c.No, the textbook was given to us in class.
13. The textbook is consistently reliable because it was given to us by our teacher.
14.The product will be completely inaccurate, and the entire lab will be ruined.
15. 602,000,000,000,000
16. a. 38 b.48 c.100 d.80
17. They have different masses.
18. a.1 mole b. 19.55 grams c.one tenth of a mole
19. 91.7% Cu 8.3% Ni
20. a.257.81 grams b. 263.74c grams c.100.09 grams
Monday, June 30, 2014
Sunday, June 29, 2014
Blog of the Day: Percent Composition
What is Percent Composition?
This is the percent by mass of each component found in a sample such as a coin.
The percent composition can be found by dividing the mass of each metal by the mass of the penny, and then multiplying by one hundred percent.
2,4375 g zinc
________ X 100 = 97.50% zinc
2.500 g total
0.0625 g copper
__________ X 100 = 2.50% copper
2.500 g total
Percent Composition helps geologists to describe how much metal or mineral is present in a particular ore and to evaluate whether the ore should be mined.
Thanks!
Forever and Always,
Abi
This is the percent by mass of each component found in a sample such as a coin.
The percent composition can be found by dividing the mass of each metal by the mass of the penny, and then multiplying by one hundred percent.
2,4375 g zinc
________ X 100 = 97.50% zinc
2.500 g total
0.0625 g copper
__________ X 100 = 2.50% copper
2.500 g total
Percent Composition helps geologists to describe how much metal or mineral is present in a particular ore and to evaluate whether the ore should be mined.
Thanks!
Forever and Always,
Abi
Section C
p.112
1. Atmosphere: nitrogen and oxygen. Hydrosphere: Water and dissolved minerals. Lithosphere: Variety of chemical resources including ores.
2. A. Crust, Mantle, Core. B. The Lithosphere's thin band of soil and rock.
3. a. Peru b. Chile c. China
4. China produces the largest masses of the eight resources on the table.
5. Ores are naturally occurring rocks that can be mined, while minerals are a naturally occurring solid substance commonly removed from ores.
6. 1. Quantity of useful ore found on site. 2. Percent of metal in the ore. 3. Type gof mining and extracting that is needed to extract the metal from its ore. 4. Distance of the mine from metal-refining facilities and markets. 5. Supply vs. Demand status 6. Enviro impact of the mining and processing.
7. There could be a larger demand for Gold (Au) forcing the mine to reopen.
8. This refers to what kind of metal is in the ore and whether it is needed or not.
9. Active metals are much more durable which would make them hard to process, also they will react to oxygen.
10. Copper would be the easiest to process because it is the least reactive.
1. Atmosphere: nitrogen and oxygen. Hydrosphere: Water and dissolved minerals. Lithosphere: Variety of chemical resources including ores.
2. A. Crust, Mantle, Core. B. The Lithosphere's thin band of soil and rock.
3. a. Peru b. Chile c. China
4. China produces the largest masses of the eight resources on the table.
5. Ores are naturally occurring rocks that can be mined, while minerals are a naturally occurring solid substance commonly removed from ores.
6. 1. Quantity of useful ore found on site. 2. Percent of metal in the ore. 3. Type gof mining and extracting that is needed to extract the metal from its ore. 4. Distance of the mine from metal-refining facilities and markets. 5. Supply vs. Demand status 6. Enviro impact of the mining and processing.
7. There could be a larger demand for Gold (Au) forcing the mine to reopen.
8. This refers to what kind of metal is in the ore and whether it is needed or not.
9. Active metals are much more durable which would make them hard to process, also they will react to oxygen.
10. Copper would be the easiest to process because it is the least reactive.
Thursday, June 26, 2014
p. 79
29. Oxygen with a mass number of 16 and oxygen with a mass number of 18 is the more similar pair. This is because the only difference is that one has more neutrons.
30. 352 pm
31. a. Germanium (Ge) b. Silicon (Si)
32. Cobalt and nickel & Argon and Potassium
33. Magnesium is an alkaline metal. It has luster, lasts, and is very durable, strong and resistant so it is great to use on ships to prevent corrosion.
Thanks!
Forever and Always,
Abiii
29. Oxygen with a mass number of 16 and oxygen with a mass number of 18 is the more similar pair. This is because the only difference is that one has more neutrons.
30. 352 pm
31. a. Germanium (Ge) b. Silicon (Si)
32. Cobalt and nickel & Argon and Potassium
33. Magnesium is an alkaline metal. It has luster, lasts, and is very durable, strong and resistant so it is great to use on ships to prevent corrosion.
 |
| Spectral Lines of Magnesium |
Thanks!
Forever and Always,
Abiii
Science Report: A way to predict Alzheimer's Disease
Researchers have found a way to predict Alzheimer's Disease.
A brain scan or spinal tap can form suspicions. The new study's conclusions are upheld by work that may explain what is happening in the disease. This disease, which wrecks people's brains, affects 35 million people- a number expected to increase in the future. And on a sad note, it is incurable. Alzheimer's is very hard to detect until the person's behavior starts to change and he starts to lose his memory. But, at this point a lot of damage has already been done to his brain.
To the patient, early intervention with any drug that might work one day is better than waiting until behavior starts to change and memory loss occurs.
Howard Federoff, of Georgetown University Medical Center provides important research. His research identified ten molecules whose concentration in the blood predicted whether someone went on to develop symptoms of Alzheimer's within the next three years.
The molecules may also help show what is happening in the early stages of Alzheimer's. They are phospholipids, which are components of cell membranes. Why the disease reduces phospholipid levels in the blood is unclear, but those levels might easily reflect problems in the membranes of the affected brain cells.
Cuties--->
A brain scan or spinal tap can form suspicions. The new study's conclusions are upheld by work that may explain what is happening in the disease. This disease, which wrecks people's brains, affects 35 million people- a number expected to increase in the future. And on a sad note, it is incurable. Alzheimer's is very hard to detect until the person's behavior starts to change and he starts to lose his memory. But, at this point a lot of damage has already been done to his brain.
To the patient, early intervention with any drug that might work one day is better than waiting until behavior starts to change and memory loss occurs.
Howard Federoff, of Georgetown University Medical Center provides important research. His research identified ten molecules whose concentration in the blood predicted whether someone went on to develop symptoms of Alzheimer's within the next three years.
The molecules may also help show what is happening in the early stages of Alzheimer's. They are phospholipids, which are components of cell membranes. Why the disease reduces phospholipid levels in the blood is unclear, but those levels might easily reflect problems in the membranes of the affected brain cells.
Cuties--->
Wednesday, June 25, 2014
Blog of the Day: B.12 and B.13
Copper Metal
-When heated, it gradually reacts with oxygen gas in the air to produce a black substance.
-2Cu(s) + O2(g) ---> 2CuO(s)
-Reacts to form black copper oxide when heated in room temperature. The metal remains relatively unreactive in air.
Magnesium Metal
-also reacts with oxygen gas
-unlike copper, when magnesium is heated in the air it quickly BURNS in a flash of light.
-2Mg(s) + O2(g) ---> 2MGO(s)
Gold (Au)
-doesn't react with any components in air, including oxygen gas.
-This is one reason why golden is highly prized in long-lasting, decorative objects (such as jewelry).
____________________
-Each solution contains a particular cation.
-Observing how willingly a certain metal reacts with oxygen provides information about the metal's chemical's reactivity.
Thanks.
Forever and Always,
Abi
-When heated, it gradually reacts with oxygen gas in the air to produce a black substance.
-2Cu(s) + O2(g) ---> 2CuO(s)
-Reacts to form black copper oxide when heated in room temperature. The metal remains relatively unreactive in air.
Magnesium Metal
-also reacts with oxygen gas
-unlike copper, when magnesium is heated in the air it quickly BURNS in a flash of light.
-2Mg(s) + O2(g) ---> 2MGO(s)
Gold (Au)
-doesn't react with any components in air, including oxygen gas.
-This is one reason why golden is highly prized in long-lasting, decorative objects (such as jewelry).
____________________
-Each solution contains a particular cation.
-Observing how willingly a certain metal reacts with oxygen provides information about the metal's chemical's reactivity.
Thanks.
Forever and Always,
Abi
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