p235 #31-38
31.
Propane
Pentane
32. There is a single covalent bond
33. Same type of alkanes but different forms
34. (on paper)
35. Straight chain alkane
36. Both are correct.
37. Paper
38.
Short straight chain because it has less carbons and hydrogens
Long branched chain because it has more carbons and hydrogens
Short branched chain because its formation of carbons and hydrogens is more complex.
Thursday, July 21, 2011
Homework #10
p361 # 14 - 20
14. CO2 and water vapor are greenhouse gases.
15.
a. Burning gas and coal, photosynthesis, and burning fossil fuel.
b. Refining fossil fuels, raising livestock, riding animal wastes
16.
a. For it to be hotter, there would need to be more greenhouse gases on earth
b. For it to be cooler, there would need to be less greenhouse gases on earth
17. Glass is much warmer because in allows the heat in, but once in they are trapped which leads to the temperature rising.
18. (on paper)
19. natural gases, CO2, calcium carbonate
20. Carbons can because they have human as well as plant activity.
14. CO2 and water vapor are greenhouse gases.
15.
a. Burning gas and coal, photosynthesis, and burning fossil fuel.
b. Refining fossil fuels, raising livestock, riding animal wastes
16.
a. For it to be hotter, there would need to be more greenhouse gases on earth
b. For it to be cooler, there would need to be less greenhouse gases on earth
17. Glass is much warmer because in allows the heat in, but once in they are trapped which leads to the temperature rising.
18. (on paper)
19. natural gases, CO2, calcium carbonate
20. Carbons can because they have human as well as plant activity.
Extra Credit
Singapore has a population said to be 5m people. With a number so large, its land mass is not big enough to support all the inhabitants. With a water being an issue, the Singaporean government has fallen under the thought of using distilled water. Though the distillation process is costly, the government has teamed up with a German engineering company that claims they can cut the price range in half. Making distillation a reasonable idea. They are running one demonstration plant now, however the construction of the full plant has already begun and its on its way to changing the lives of many in Singapore.
Wednesday, July 20, 2011
Blog Question: For you, what has been the most valuable learning from summer Chemistry (and why)?
I think that my most valuable thing I learned from this summer chemistry course was responsibility. I feel like in order to be successful in this class, the key thing was responsibility. If it was doing homework every night and posting it on your blog. Or studying in order to do well on the quiz at the end of the week. In this class there was a lot of work that was pushed into six weeks, so responsibility was the greatest role in success, and learning.
Tuesday, July 19, 2011
Homework #9
p344 #1 - 4
1. Infrared radiation cannot get into our atmosphere as well as ultraviolet rays.
2. Visible radiation energizes electrons, this is what makes sunsets red.
3. In humid areas the air is more expanded, in dry areas can be cool or warm based on the climate,
4.
a. Hotter in the day because of the earths more dense.
b. Colder because the earth would be less dense.
1. Infrared radiation cannot get into our atmosphere as well as ultraviolet rays.
2. Visible radiation energizes electrons, this is what makes sunsets red.
3. In humid areas the air is more expanded, in dry areas can be cool or warm based on the climate,
4.
a. Hotter in the day because of the earths more dense.
b. Colder because the earth would be less dense.
Monday, July 18, 2011
Homework #8
p204 #7-13
7. Alloy is a new made substance physically combined by different metals.
8. Steel, this is made from iron, and carbon. Brass, this is made from zinc and copper.
9. Carbon
10. Steel, which is used mainly in kitchen wear and cooking supplies, is 99% and 1% carbon does not rust.
11. Metalliods are semiconductors because they are in between metals and nonmetals. The can barely conduct electricty and be malleable .
12. Gallium, Arsenic, sillicon
13. Doping technology is so that we can make less reactive elements more reactive.
7. Alloy is a new made substance physically combined by different metals.
8. Steel, this is made from iron, and carbon. Brass, this is made from zinc and copper.
9. Carbon
10. Steel, which is used mainly in kitchen wear and cooking supplies, is 99% and 1% carbon does not rust.
11. Metalliods are semiconductors because they are in between metals and nonmetals. The can barely conduct electricty and be malleable .
12. Gallium, Arsenic, sillicon
13. Doping technology is so that we can make less reactive elements more reactive.
Thursday, July 14, 2011
Zoobotics (Extra Credit)
Until now, when people think of robots they think of the onlys with claws that crash into eachother, or the ones with human likes qualities, much like C3PO. Companies like Sony have made robot dogs that too most can just be considered as "toys". But no longer, sudden advances in this technologic field have created something that will no longer associate the word "toy" with robots. Cecillia Laschi of Sant'Anna School of Advanced studies in Pisa have taken it upon themselves to create a robotic octopus. The team took the time to study the body of an octopus themsleves, in order to properly remake it in robot form. Once they were done with this study they made a casting out of sillicone and was fitted with pressure sensors. Inside the cast are cables made of elastic nickel titanium alloy. This allows the arm to wrap around much like an octopus would. However; sense there is only one arm made it is really a monopus. But in the next two years Laschi plans on making 7 more arms, and complete the project. This is only one of many different examples of Zoobotics. Other groups are engineering different fish, geckos, and shrews. With advances in technology all this may be a possibility to see in our future.
http://www.economist.com/node/18925855
Homework #7
p182 #18 -21
18.
a. When you reuse something, the looks or use for it do not change. However; when you recycle you can completely change its physical appearence without changing its chemical structure.
b. Reusing: Keep the same water bottle and use it over and over again.
Recycle: Melting a plastic water bottle to make a different plastic appliance such as a container.
19.
a. fresh water and air, plants, soil, and animals are all renewable resources
b. metals, coal, natural gases, and pertoleuom are nonrenewable.
20 .
a. Reusing
b. Recycling
c. Recycling
21. Less stuff happens to light bulbs then paper. Which makes light bulbs to be recycled much more than paper. They live longer in the renewal procecdure.
p204 #1-6
1. Allotropes are the same elements that have been changed but still holds the same physical and chemical properties of the element.
2. Oxygen and Phospherous
3.
a. the properties are different because a diamond can not be destroyed and shiny, while lead and coal are dull and toxic.
b. Properties are different because of different physical appereance
c. A diamond gets its worth through its appeareance, other things that are not good to visually see are not worth that much
4. Some things are not made from natural resources because the reactivity is so high its safer to be made in a lab. Silver and gold which have low reactivity are found in nature.
5. Advantages are all the control we have as the creators but it comes with side effects.
6. Plastic can be altered to be hard for sturdiness and it ca be made maeleable and soft.
18.
a. When you reuse something, the looks or use for it do not change. However; when you recycle you can completely change its physical appearence without changing its chemical structure.
b. Reusing: Keep the same water bottle and use it over and over again.
Recycle: Melting a plastic water bottle to make a different plastic appliance such as a container.
19.
a. fresh water and air, plants, soil, and animals are all renewable resources
b. metals, coal, natural gases, and pertoleuom are nonrenewable.
20 .
a. Reusing
b. Recycling
c. Recycling
21. Less stuff happens to light bulbs then paper. Which makes light bulbs to be recycled much more than paper. They live longer in the renewal procecdure.
p204 #1-6
1. Allotropes are the same elements that have been changed but still holds the same physical and chemical properties of the element.
2. Oxygen and Phospherous
3.
a. the properties are different because a diamond can not be destroyed and shiny, while lead and coal are dull and toxic.
b. Properties are different because of different physical appereance
c. A diamond gets its worth through its appeareance, other things that are not good to visually see are not worth that much
4. Some things are not made from natural resources because the reactivity is so high its safer to be made in a lab. Silver and gold which have low reactivity are found in nature.
5. Advantages are all the control we have as the creators but it comes with side effects.
6. Plastic can be altered to be hard for sturdiness and it ca be made maeleable and soft.
Molecules Lab Questions
1.
a. The observations lead us to believe that the reaction was incomplete because the copper oxide quickly reacted with the HCl.
b. We would have been more efficient with the heating and sturring process, more oxygen would have reacted with the copper making CuO.
2.
a. The original mass was 1.07 g
b. The left over mass was 0.11 g
3.
a. ?? (Help)
b. (Unable to do)
4.
a.After we added zinc, the solution caused the zinc itself to start bubbling and fizzing, eating away at the zinc.
b. The reactants between the zinc and the solution were caused by the different charges in the zinc ions and the solution.
c. The color can be used because once the Cu2(plus) ions have been removed, the color should go back to its original state.
5.
a. The CuCl2 solution was used up in order recover the Cu metal from the solution.
b. The CuCl2 solution into filtration, the zinc was left behind and desposed of, and the copper was recovered.
a. The observations lead us to believe that the reaction was incomplete because the copper oxide quickly reacted with the HCl.
b. We would have been more efficient with the heating and sturring process, more oxygen would have reacted with the copper making CuO.
2.
a. The original mass was 1.07 g
b. The left over mass was 0.11 g
3.
a. ?? (Help)
b. (Unable to do)
4.
a.After we added zinc, the solution caused the zinc itself to start bubbling and fizzing, eating away at the zinc.
b. The reactants between the zinc and the solution were caused by the different charges in the zinc ions and the solution.
c. The color can be used because once the Cu2(plus) ions have been removed, the color should go back to its original state.
5.
a. The CuCl2 solution was used up in order recover the Cu metal from the solution.
b. The CuCl2 solution into filtration, the zinc was left behind and desposed of, and the copper was recovered.
Homework #6
p180 #13 - 17
13.
a. 6 moles are needed
6. 5 moles are made
c. 5 moles of Pb
14.
a. 17 moles
b. 1,863 g
c. 952 g
d. 669 g
15. You have to divide the number of oxygen atoms by all the atoms in the compound. Making it 72%
16.
87% silver
53% aluminium
40% calcium
17. 68% lead
50% PbSO4
10% lead
help???
13.
a. 6 moles are needed
6. 5 moles are made
c. 5 moles of Pb
14.
a. 17 moles
b. 1,863 g
c. 952 g
d. 669 g
15. You have to divide the number of oxygen atoms by all the atoms in the compound. Making it 72%
16.
87% silver
53% aluminium
40% calcium
17. 68% lead
50% PbSO4
10% lead
help???
Tuesday, July 12, 2011
Homework #5
p180 #1-12
1. The law of conservation of matter is that matter cannot be created nor destroyed
2. Scientific law reviews summarizes what has been viewed
3. Using up and throwing away both dont follow along with the law of conservation of matter.
4.
a.Unbalanced
b.Unbalanced
c.Balanced
5.
a. 3
b. 2
c. 1
6.
1,3,1,3
2,3,2,2
2,3,2
7.
1,3,2,3
8. They are conserved
The student did not make a correct equation
(on paper)
9. ??
10.
32g
48g
100g
58g
180g
11. Putting together two elements would make a compound
12.
a. 1
b. .5
c. .1
d. .03
1. The law of conservation of matter is that matter cannot be created nor destroyed
2. Scientific law reviews summarizes what has been viewed
3. Using up and throwing away both dont follow along with the law of conservation of matter.
4.
a.Unbalanced
b.Unbalanced
c.Balanced
5.
a. 3
b. 2
c. 1
6.
1,3,1,3
2,3,2,2
2,3,2
7.
1,3,2,3
8. They are conserved
The student did not make a correct equation
(on paper)
9. ??
10.
32g
48g
100g
58g
180g
11. Putting together two elements would make a compound
12.
a. 1
b. .5
c. .1
d. .03
Manganese Metal Project
For my Metal Report I luckily was given Manganese! Here are some great facts and information I have learned.
Manganese is a transition metal with the symbol Mn. The atomic weight is 54.9380, and has an atomic number of 25. Mn contains 30 neutrons, 25 protons and 25 electrons. It is utilizes in food consumption and some industrial uses. Mn is used to make some characteristics such as strength, hardness, and durability. Manganese is also a main component in steel. Really, steel can not be made with out manganese because it is a big part of steel itself. Manganese is also used to create color in glass, it plays a role in why quartz is somewhat purple. Mn makes a lot of coloring in many substances, however; most manganese oxide turns out to be black. Still, it is essential for the production of iron and steel. Manganese slowly combines with oxygen to make manganese oxide, and at higher temp. it reacts rapidly. When it is heated, manganese gives off a bright white light. Mn reacts slowly with cold water, but faster as the temperature rises. It does in fact react with most acids, resulting in the release of hydrogen gas. Also combining with fluorine and chloride making manganese difluoride and manganese dichloride.
( Manganese was found in some cave paintings in France that were 16, 000 years old )
Manganese can be made in a scientific lab, and is found around the earth. Mn is reactive when pure, and if in powder form it can burn oxygen.
Manganese is a transition metal with the symbol Mn. The atomic weight is 54.9380, and has an atomic number of 25. Mn contains 30 neutrons, 25 protons and 25 electrons. It is utilizes in food consumption and some industrial uses. Mn is used to make some characteristics such as strength, hardness, and durability. Manganese is also a main component in steel. Really, steel can not be made with out manganese because it is a big part of steel itself. Manganese is also used to create color in glass, it plays a role in why quartz is somewhat purple. Mn makes a lot of coloring in many substances, however; most manganese oxide turns out to be black. Still, it is essential for the production of iron and steel. Manganese slowly combines with oxygen to make manganese oxide, and at higher temp. it reacts rapidly. When it is heated, manganese gives off a bright white light. Mn reacts slowly with cold water, but faster as the temperature rises. It does in fact react with most acids, resulting in the release of hydrogen gas. Also combining with fluorine and chloride making manganese difluoride and manganese dichloride.
( Manganese was found in some cave paintings in France that were 16, 000 years old )
Manganese was founded in 1774. Its not combustible but can enhance combustibility in other substances. Mn happens to be very expensive and is highly needed. It can be found in tiny amounts of the earths water. Its found everywhere and is one of the three toxic essential trace elements. Which means that the body needs it to survive but if there is too much it can be very dangerous in the body.
Sunday, July 10, 2011
Homework #4
p151 #9 - 22
9. They are more difficult to refine because they can react so easily, like with particles in the air. And with not so reactive metals they can be refine with out easily being contaminated again.
10. Zinc and copper because those metals are not very reactive. Magnesium is hard to process because of its flamability.
11. Because they can react with oxygen due to there high reactivity levels.
12. Calcium with chromium chloride due to the fact that chromium chloride is less reactive than clacium.
13. The second one will most likely happen because zinc is more reactive than silver.
14. The iron spoon is more reactive then lead nitrate, therefore they will react.
(on paper)
15. Oxidation : When an ion gains one or more electrons
Reduction : When an ion loses one or more electrons
16. (on paper)
17.
a. reduction
b. oxidation
c. reduction
18. Zinc was oxidized
Nickel was reduced
Zinc
19. The postassium was oxidized
9. They are more difficult to refine because they can react so easily, like with particles in the air. And with not so reactive metals they can be refine with out easily being contaminated again.
10. Zinc and copper because those metals are not very reactive. Magnesium is hard to process because of its flamability.
11. Because they can react with oxygen due to there high reactivity levels.
12. Calcium with chromium chloride due to the fact that chromium chloride is less reactive than clacium.
13. The second one will most likely happen because zinc is more reactive than silver.
14. The iron spoon is more reactive then lead nitrate, therefore they will react.
(on paper)
15. Oxidation : When an ion gains one or more electrons
Reduction : When an ion loses one or more electrons
16. (on paper)
17.
a. reduction
b. oxidation
c. reduction
18. Zinc was oxidized
Nickel was reduced
Zinc
19. The postassium was oxidized
mercury has been reduced
postassium
20. (on paper)
21. Electrometallurgy is a electrical current supplying electrons to metal ion
Pyrometallurgy uses thermal energy to supply electrons
Hydrometallurgy uses a water solution to dissolve metal materials and get elements like gold
22. Electrometallurgy
Pyrometallurgy
Friday, July 8, 2011
Homework #3
p132 #26 - 28, 29 - 34
26. metallic elements
27. Noble gases barely gain or lose electrons, showing how they are not very reactant. Elements who lose or gain electrons are usually the ones that are most reactive.
28.
a. cation
b. cation
c. anion
d. cation
e. anion
f. cation
g. cation
h. anion
29. a is closer to b
30. 200 ppm
31. a. chemically, like the rust of iron.
b. physical, because that wont change the chemical makeup.
c. chemical
32.
Bromine
Sillicon
33. All the info will help get to an answer.
34. It would not. due to the elements placement
p151 # 1 - 8
1. Hydrogen and Oxygen
2.
a. Crust, mantle, core
b. lithosphere
3.
mexico
japan
china
4. China
5. Have elements
6. The way the ore is found, the amount of it found, and the type of mining used.
7. Type of mining to get gold. Now there are newer and better ways to getting gold.
8. There needs to be a good amount of ore to find.
26. metallic elements
27. Noble gases barely gain or lose electrons, showing how they are not very reactant. Elements who lose or gain electrons are usually the ones that are most reactive.
28.
a. cation
b. cation
c. anion
d. cation
e. anion
f. cation
g. cation
h. anion
29. a is closer to b
30. 200 ppm
31. a. chemically, like the rust of iron.
b. physical, because that wont change the chemical makeup.
c. chemical
32.
Bromine
Sillicon
33. All the info will help get to an answer.
34. It would not. due to the elements placement
p151 # 1 - 8
1. Hydrogen and Oxygen
2.
a. Crust, mantle, core
b. lithosphere
3.
mexico
japan
china
4. China
5. Have elements
6. The way the ore is found, the amount of it found, and the type of mining used.
7. Type of mining to get gold. Now there are newer and better ways to getting gold.
8. There needs to be a good amount of ore to find.
Thursday, July 7, 2011
NBA Shutdown (Extra Credit)
http://www.economist.com/node/18928873
Semester 2 Homework #1
1.
a. Physical
b. Physical
c. Chemical
d. Physical
2.
a. Physical
b. Physical
c. Physical
d. Chemical
3. a. Physical
b. Chemical
c. Physical
d. Physical
4. a. Chemical
b. Physical
c. Chemical
d. Chemical
5. An animal turns brown because the air chemically change the apple which alter its physical looks.
6. a. Pour, then continue baking.
b. The ingredients in the bowl going into the bowl is a chemical and physical change.
7. metals
nonmetals
metals
metals
8. metal
metalloid
nonmetal
metal
9. Sillicon (Si) Germanium (Ge)
10. Brittleness and nonconductivity
11. Durable, solid, have high metling points
a. Physical
b. Physical
c. Chemical
d. Physical
2.
a. Physical
b. Physical
c. Physical
d. Chemical
3. a. Physical
b. Chemical
c. Physical
d. Physical
4. a. Chemical
b. Physical
c. Chemical
d. Chemical
5. An animal turns brown because the air chemically change the apple which alter its physical looks.
6. a. Pour, then continue baking.
b. The ingredients in the bowl going into the bowl is a chemical and physical change.
7. metals
nonmetals
metals
metals
8. metal
metalloid
nonmetal
metal
9. Sillicon (Si) Germanium (Ge)
10. Brittleness and nonconductivity
11. Durable, solid, have high metling points
Homework #2
p130 # 13 - 25
13.
a. group
b. family
14. K - Potassium
Na - Sodium
15. The first column on the right side has the noble gases.
All noble gases freeze at low temperatures.
Every noble gas doesnt really react.
16.
a. MgF2
b. GaP2
17. 60°C
18. Chlorine would have a lowering boiling point simply because it is a pure gas.
Iodine has a higher boiling point because it is a solid at room temperature.
19. a. Carbon
b. Carbon
Calcium - 20 protons/electrons
e. Platinum (78 protons)
Uranium - 92 protons/electrons
20. Beryllium - 4 protons/electrons 5 neutrons
Nitrogen - 7 protons/electrons 7 neutrons
Neon - 10 protons/ electrons 10 neutrons
21. Wrong because atoms dont lose or gain protons, only electrons.
22. a.Berylliums mass number is 9. Nitrogen 14. Neon 20
b. Beryllium
23. We dont know if its physical or chemical because there is not suffcient info given.
24. the electron is so small you dont need to measure weight.
25. 24 - 12 p/e
25 - 13 p 12 e
26. 13 p/e
13.
a. group
b. family
14. K - Potassium
Na - Sodium
15. The first column on the right side has the noble gases.
All noble gases freeze at low temperatures.
Every noble gas doesnt really react.
16.
a. MgF2
b. GaP2
17. 60°C
18. Chlorine would have a lowering boiling point simply because it is a pure gas.
Iodine has a higher boiling point because it is a solid at room temperature.
19. a. Carbon
b. Carbon
Calcium - 20 protons/electrons
e. Platinum (78 protons)
Uranium - 92 protons/electrons
20. Beryllium - 4 protons/electrons 5 neutrons
Nitrogen - 7 protons/electrons 7 neutrons
Neon - 10 protons/ electrons 10 neutrons
21. Wrong because atoms dont lose or gain protons, only electrons.
22. a.Berylliums mass number is 9. Nitrogen 14. Neon 20
b. Beryllium
23. We dont know if its physical or chemical because there is not suffcient info given.
24. the electron is so small you dont need to measure weight.
25. 24 - 12 p/e
25 - 13 p 12 e
26. 13 p/e
Friday, July 1, 2011
Extra Credit
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