1) The things I felt that worked well this summer was the blog because people could get help from other people's blogs without copying their answers. I also thought the practive quizzes worked really well because it helped me get a better understanding of the information we were currently learning.
2) Next year, I would go over the practice quizzes before taking the quiz so we could have a mini-reveiw before each mini quiz. I also don't think we should have gone over the homework questions in the beginning of the course because I felt that it didn't really help my understanding of the concepts.
3) We could go further with our economist reports by being in pairs and making really in depth, detailed powerpoint or make creative videos that protrayed our article in an interesting way. However I feel that if we were to make detailed powerpoints or videos we should have longer to make them.
4) We can use our blogs more effectivly by writing something your learned in class that day and really explain the concept, instead of the blog questions we currently have daily.
5) I feel that the instructor shouldn't check the homeowork to see if we got the questions wrong but see if we have completed the homework.
Thursday, July 25, 2013
Wednesday, July 24, 2013
Blog of the Day
Hybrids are better for the environment because they don't release as much gasoline in the atmosphere and they are able to store some of the "lost" energy and save it for later. Electrical cars are even better because they don't release any gasoline into the atmosphere, which can cause a rise in temperatures.
3SBS pg.258 #11 and 12
11)
a. Chemical to mechanical
b. Electrical to light energy
c. Mechanical to electrical
d. Mechanical to electrical
12) The other 75% of the energy is lost in the engine mostly as heat.
a. Chemical to mechanical
b. Electrical to light energy
c. Mechanical to electrical
d. Mechanical to electrical
12) The other 75% of the energy is lost in the engine mostly as heat.
3SCS pg.279 #1, 3, 6, 13
1)
a. One repeating unit
b. Two repeating units
c. Three repeating units
d. 500 to 20,000 repeating units
3)
a. Natural polymers: starch, proteins, jelatin, and nucleic acid
b. Synthetic polymers: fabrics, rubber, foams, and adhesives
6) The term unsaturated is used to describe structures of alkenes because they contain carbon-carbon double bonds.
13) I can't find the answer.
a. One repeating unit
b. Two repeating units
c. Three repeating units
d. 500 to 20,000 repeating units
3)
a. Natural polymers: starch, proteins, jelatin, and nucleic acid
b. Synthetic polymers: fabrics, rubber, foams, and adhesives
6) The term unsaturated is used to describe structures of alkenes because they contain carbon-carbon double bonds.
13) I can't find the answer.
Tuesday, July 23, 2013
3SBS pg.258 #1-10
1) Petroleum is called "buried sunshine" because the energy released by burning fossil fuels represents energy originally captured from the sunlight.
2)
a. Potential energy is energy of position or condition. An example is when a car moves, the spring unwinds, providing energy to the moving parts.
b. Kinetic energy is energy related to motion. An example is the movement of a car based on converting potential energy into kinetic energy.
3) When a chemical reaction takes place and releases energy, bonds break and reatant atoms reorganize to form new bonds.
4) Butane has more potential energy because it has a higher boiling and more carbons.
5)
a. Potential energy
b. Potential energy
c. Kinetic energy
d. Potential energy
e. Kinetic energy
6) Energy is requires to break chemical bonds because the process yeilds products with different and more stable bonding arrangements of their atoms. Some of the energy stored in the reactants is released to form heat and light.
7)
a. Exothermic, because energy is being released.
b. Endothermic, because energy is needed for the process.
c. Endothermic, because energy is needed for the process.
8) Burning candle is an exothermic reaction because there is more energy in the product than in the reaction to begin with.
9) I don't get it.
10) The law of conservation of energy states that energy is neither created nor destroyed.
2)
a. Potential energy is energy of position or condition. An example is when a car moves, the spring unwinds, providing energy to the moving parts.
b. Kinetic energy is energy related to motion. An example is the movement of a car based on converting potential energy into kinetic energy.
3) When a chemical reaction takes place and releases energy, bonds break and reatant atoms reorganize to form new bonds.
4) Butane has more potential energy because it has a higher boiling and more carbons.
5)
a. Potential energy
b. Potential energy
c. Kinetic energy
d. Potential energy
e. Kinetic energy
6) Energy is requires to break chemical bonds because the process yeilds products with different and more stable bonding arrangements of their atoms. Some of the energy stored in the reactants is released to form heat and light.
7)
a. Exothermic, because energy is being released.
b. Endothermic, because energy is needed for the process.
c. Endothermic, because energy is needed for the process.
8) Burning candle is an exothermic reaction because there is more energy in the product than in the reaction to begin with.
9) I don't get it.
10) The law of conservation of energy states that energy is neither created nor destroyed.
3SAS pg.235 #31-38
31)
a. Propane, C3H8
b. Hexane, C6H14
32) The prefix -ane implies the number of atoms in the backbone carbon chain.
33) Yes, because they all contain identical molecule formulas, but different arrangments of atoms.
34)
35) Butane is the shortest-chain alkane that can demonstrate isomerism.
36) A linear chain is where each carbon atom is only linked to one or two other carbon atoms and a zig-zag chain is where one atoms is linked to three or four carbon atoms.
37)
a.
b. The branch-chain insomer because it has less surface area for intermolecular forces.
38)
a. short, straight-chain because it has more surface area for intermolecular forces.
b. short, straight-chain
c. short, straigh-chain
a. Propane, C3H8
b. Hexane, C6H14
32) The prefix -ane implies the number of atoms in the backbone carbon chain.
33) Yes, because they all contain identical molecule formulas, but different arrangments of atoms.
34)
35) Butane is the shortest-chain alkane that can demonstrate isomerism.
36) A linear chain is where each carbon atom is only linked to one or two other carbon atoms and a zig-zag chain is where one atoms is linked to three or four carbon atoms.
37)
a.
b. The branch-chain insomer because it has less surface area for intermolecular forces.
38)
a. short, straight-chain because it has more surface area for intermolecular forces.
b. short, straight-chain
c. short, straigh-chain
Monday, July 22, 2013
3SAS pg. 233-235 #1-30 (except #2, 4, 9, 14, 24, 25)
1) A hydrocarbon is a molecular compound that only contains atoms of hydrogen and carbon.
3) Petroleum is a nonrenewable resource and can be used as both fuel, which can be converted to gasoline, can provide heat, can deliver energy, and can be used to make manufactured goods.
5) By saying crude it is meant that it is unrefined.
6) I couldn't find the answer.
7) Some fuels obtained from crude petroleum include: kerosene, petroleum oil, gasoline, and lubricating oil.
8)
a. Candles, water bottle, soap, rubbing alcohol are all houshold items made from petroleum.
b. palm oil could replace petroleum in candles, aluminum could replace petroleum in water bottles, detergenst could replace petroleum in soap, and Isopropyl alcohol could replace petroleum in rubbing alcohol.
10)
a. Middle East has the most petroleum reserves.
b. Western Europe has the least petroleum reserves.
11)
a. Central Asia, Far East, and Oceania has the most petroleum consumption.
b. Africa has the least petroleum consumption.
12) Density could be used to seperate two different liquids if the substance are not dissolvable.
13) A mixture with the substances water and acetone would be the easiest to seearate from each other by distillation because water has the highest boiling point, while acetone has the lowest boiling point, causing it to be easily seperated.
15)
16) Fractional distillation differs from simple distillation because fractional distillation is a refining that does not seperate each compound in a mixture, but produces several distinctive mixtures, called fractions, while simple distillation is the seperation of liquid substances according to their differing boiling points.
17)
light: naphthas and solvents, petrochemicals, and refined oils.
intermediate: gas oil, petrochemicals, and diesel fuel oil.
heavy: heavy oils and wax, cracking stock, and petrochemicals.
18) In a distillation tower I would expect the fraction with the highest boiling range to be at the bottom of the tower because substances with the highest boiling points never vaporize, which causes them to drain to the bottom of the tower.
19) A way to further separate the components of each fraction would be to apply distillation techniques in a large-scale.
20)
1. Methane
2. Pentane
3. Hexane
4. Octane
Since this order increases in boiling point it also shows an increase in stronger intermolecular forces because the higher the boiling point the stronger the intermolecular forces are.
21) A covalent bond is the sharing of two or more valence electrons between two atoms.
22) Atoms with filled outer electron shells not form covalent bonds because valence electrons, which have electrons within atoms unfilled, outer shell, participate in a bond so that means that atoms with filled filled outer electron shells must not bond.
23) A covalent bond linking two atoms is like two dogs tugging on the same sock because like the two dogs the electrons much share the sock and even though the dogs may pull away from each other, they are still going to be connected by the sock just like atoms will still be connected by a covalent bond.
26) I can't find the answer.
27)
a.
b.
28) The electron-dot representation of a carbon atom shows only four atoms because it represent the valence electrons.
29)
a. C9H20
30)
a. 128g
b. 226g
c. 142g
d. 254g
3) Petroleum is a nonrenewable resource and can be used as both fuel, which can be converted to gasoline, can provide heat, can deliver energy, and can be used to make manufactured goods.
5) By saying crude it is meant that it is unrefined.
6) I couldn't find the answer.
7) Some fuels obtained from crude petroleum include: kerosene, petroleum oil, gasoline, and lubricating oil.
8)
a. Candles, water bottle, soap, rubbing alcohol are all houshold items made from petroleum.
b. palm oil could replace petroleum in candles, aluminum could replace petroleum in water bottles, detergenst could replace petroleum in soap, and Isopropyl alcohol could replace petroleum in rubbing alcohol.
10)
a. Middle East has the most petroleum reserves.
b. Western Europe has the least petroleum reserves.
11)
a. Central Asia, Far East, and Oceania has the most petroleum consumption.
b. Africa has the least petroleum consumption.
12) Density could be used to seperate two different liquids if the substance are not dissolvable.
13) A mixture with the substances water and acetone would be the easiest to seearate from each other by distillation because water has the highest boiling point, while acetone has the lowest boiling point, causing it to be easily seperated.
15)
16) Fractional distillation differs from simple distillation because fractional distillation is a refining that does not seperate each compound in a mixture, but produces several distinctive mixtures, called fractions, while simple distillation is the seperation of liquid substances according to their differing boiling points.
17)
light: naphthas and solvents, petrochemicals, and refined oils.
intermediate: gas oil, petrochemicals, and diesel fuel oil.
heavy: heavy oils and wax, cracking stock, and petrochemicals.
18) In a distillation tower I would expect the fraction with the highest boiling range to be at the bottom of the tower because substances with the highest boiling points never vaporize, which causes them to drain to the bottom of the tower.
19) A way to further separate the components of each fraction would be to apply distillation techniques in a large-scale.
20)
1. Methane
2. Pentane
3. Hexane
4. Octane
Since this order increases in boiling point it also shows an increase in stronger intermolecular forces because the higher the boiling point the stronger the intermolecular forces are.
21) A covalent bond is the sharing of two or more valence electrons between two atoms.
22) Atoms with filled outer electron shells not form covalent bonds because valence electrons, which have electrons within atoms unfilled, outer shell, participate in a bond so that means that atoms with filled filled outer electron shells must not bond.
23) A covalent bond linking two atoms is like two dogs tugging on the same sock because like the two dogs the electrons much share the sock and even though the dogs may pull away from each other, they are still going to be connected by the sock just like atoms will still be connected by a covalent bond.
26) I can't find the answer.
27)
a.
28) The electron-dot representation of a carbon atom shows only four atoms because it represent the valence electrons.
29)
a. C9H20
b. C16H34
c. C10H22
d. C18H38
c. C10H22
d. C18H38
30)
a. 128g
b. 226g
c. 142g
d. 254g
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