http://public.web.cern.ch
http://www.fnal.gov/\
griffinscience.com
http://hyperphysics.phy-astr.gsu.edu
Sunday, December 12, 2010
Test 1 Objective 5
I think that the atomic model in 2050 will look like it does now, with the current electron cloud, but the electrons will have a more advanced orbital. We will be able to measure the speeds of how fast they go, and we will be able to see how the atoms moves, as if in a circle or rapidly in random directions.
In 2100, I believe that we will see how atoms react with other atoms around them. So we will see how they bond, act, and react with the atoms around them. So there will be energy levels and charges around them.
In the year 2500, i believe that all atomic models will be 3D and holographic. You will be able to zoom, scroll, and learn facts about the elements all with the touch of a finger. We will have discovered many more elements, and there facts will tell us more on the building of the future atomic model.
In 2100, I believe that we will see how atoms react with other atoms around them. So we will see how they bond, act, and react with the atoms around them. So there will be energy levels and charges around them.
In the year 2500, i believe that all atomic models will be 3D and holographic. You will be able to zoom, scroll, and learn facts about the elements all with the touch of a finger. We will have discovered many more elements, and there facts will tell us more on the building of the future atomic model.
Test 1 Objective 1 Answers
1. Electrons, Protons, and Neutrons.
2. Lavoisier believed and stated that the matter could not be created or destroyed, only change form.
3.J.J. Thomson.
4.Protons and Neutrons
5. Electrons
6. He thought that everything was composed of atoms, and atoms could not be divided. He also thought that everything had its own atoms (wood had wood atoms, air had air atoms, etc.)
7. Stated that there were electrons with a negative charge surrounded by a sea of positive charge. Created by J. J. Thomson.
8.The Bohr model consists of a nucleus that has protons and neutrons, and around it electrons that orbit in a circular pattern around the nucleus.
9. John Dalton's atomic model was just a block mass that couldn't be divided.
10. Schrödinger's Cat is a thought experiment that says if a cat was in a box with a flask of poison, a hammer that would break the flask, but only if a radioactive substance decided to release a particle. Since we don't know when or if the particle is released, we must assume the cat as dead and alive at the same time. The only way we know is if we open the box and look.
11. This experiment says since we don't know where electrons are exactly, we must assume them as in every possible spot at the same time.
2. Lavoisier believed and stated that the matter could not be created or destroyed, only change form.
3.J.J. Thomson.
4.Protons and Neutrons
5. Electrons
6. He thought that everything was composed of atoms, and atoms could not be divided. He also thought that everything had its own atoms (wood had wood atoms, air had air atoms, etc.)
7. Stated that there were electrons with a negative charge surrounded by a sea of positive charge. Created by J. J. Thomson.
8.The Bohr model consists of a nucleus that has protons and neutrons, and around it electrons that orbit in a circular pattern around the nucleus.
9. John Dalton's atomic model was just a block mass that couldn't be divided.
10. Schrödinger's Cat is a thought experiment that says if a cat was in a box with a flask of poison, a hammer that would break the flask, but only if a radioactive substance decided to release a particle. Since we don't know when or if the particle is released, we must assume the cat as dead and alive at the same time. The only way we know is if we open the box and look.
11. This experiment says since we don't know where electrons are exactly, we must assume them as in every possible spot at the same time.
Test 1 Objective 1 Questions
1. Name 3 parts of an atom.
2.Describe Lavoisier's atomic theory of the law of conservation of mass.
3. Who discovered the electron?
4.What types of particles are in the nucleus of an atom?
5.What particles have orbitals around the nucleus?
6. Describe Democratis' theory.
7. Describe the plum pudding model and tell who created it.
8.Describe the Bohr model.
9. How does Dalton's model differ from other atomic models?
10. Describe Schrödinger's Cat.
11. How does this apply to his atomic model?
2.Describe Lavoisier's atomic theory of the law of conservation of mass.
3. Who discovered the electron?
4.What types of particles are in the nucleus of an atom?
5.What particles have orbitals around the nucleus?
6. Describe Democratis' theory.
7. Describe the plum pudding model and tell who created it.
8.Describe the Bohr model.
9. How does Dalton's model differ from other atomic models?
10. Describe Schrödinger's Cat.
11. How does this apply to his atomic model?
Test 1: Objective 2
An electron is a particle within an atom creating a negative charge. They were officially discovered by Johann Wilhelm Hittorf, who was a German physicist. No one has ever actually seen an atom, much less an electron, since electrons are hundreds or thousands the size of atoms. But we almost never come across a discovery like this by accident. It is human nature to come up with an idea, and then try to support that idea with evidence. With the right equipment, it is very easy to see an electron. We can bounce things, such as neutrons or ELECTRONS!!! off of atoms. We can also track the movement of electrons by studying electricity.
Thursday, December 9, 2010
Test 8
1. V=2,000cm cubed.
2.10gms per cm cubed.
3. As we know when a candle burns, it takes the wick and candle just sitting with potential energy, and causes it to catch on fire. Fire is a chemical reaction that releases chemical energy. It also releases light and thermal energy to keep us warm and bright. The flame moves, releasing kinectic energy. Since the electrons do not flow, there is no electrical energy involved when a candle burns. There would be electromagnetic energy released in light rays.
4.Boyles law is simple: if the pressure of a certain mass is increased, the volume will decrease.
Charles law states that if the temperature increases, than the volume will increase as well. If I had to tell my pet, I would give it a treat after every statement. If I had to tell my nephew, I would speak in Klingon.
5.V(arrow up) T (arrow up) P (arrow down)
V (arrow down) T(arrow down) P (arrow up)
2.10gms per cm cubed.
3. As we know when a candle burns, it takes the wick and candle just sitting with potential energy, and causes it to catch on fire. Fire is a chemical reaction that releases chemical energy. It also releases light and thermal energy to keep us warm and bright. The flame moves, releasing kinectic energy. Since the electrons do not flow, there is no electrical energy involved when a candle burns. There would be electromagnetic energy released in light rays.
4.Boyles law is simple: if the pressure of a certain mass is increased, the volume will decrease.
Charles law states that if the temperature increases, than the volume will increase as well. If I had to tell my pet, I would give it a treat after every statement. If I had to tell my nephew, I would speak in Klingon.
5.V(arrow up) T (arrow up) P (arrow down)
V (arrow down) T(arrow down) P (arrow up)
Thursday, December 2, 2010
Homework 10 Part 6
1. An acid is a substance with a pH of less than 7, and reacts with bases and metals. They usually turn litmus paper blue. The lower the pH, the greater acid there is.
2. Neutralization is when you balance out how acidic or basic something is through a chemical reaction... or making the pH 7. An example would be making salt.
3. An indicator is something that shows how acidic or basic something.
4.Corrosive is a substance that dissolves or disintegrates with its surroundings, such as a strong acid or base.
5. Hydroxide ion aka OH- is the ion created by a base with water.
2. Neutralization is when you balance out how acidic or basic something is through a chemical reaction... or making the pH 7. An example would be making salt.
3. An indicator is something that shows how acidic or basic something.
4.Corrosive is a substance that dissolves or disintegrates with its surroundings, such as a strong acid or base.
5. Hydroxide ion aka OH- is the ion created by a base with water.
Homework 10 Part 5
1. Mechanical and CHemical
2.Mechanical Digestion breaks down the food physically. Chemical Digestion breaks down the food into molecules chemically.
3.They lose a large part of the physical digestion and are not able to break down the food.
4. Mouth= 5,6, or 7
Stomach= About 2
Small Intestine= about 7
5. The mouth doesn't need much acid because it breaks down the food mechanically. The stomach however, relies on the acid to break down the food, thus needing a lower pH.
2.Mechanical Digestion breaks down the food physically. Chemical Digestion breaks down the food into molecules chemically.
3.They lose a large part of the physical digestion and are not able to break down the food.
4. Mouth= 5,6, or 7
Stomach= About 2
Small Intestine= about 7
5. The mouth doesn't need much acid because it breaks down the food mechanically. The stomach however, relies on the acid to break down the food, thus needing a lower pH.
Homework 10 Part 4
-1. The hydrogen ion
2. The acids form hydrogen ions while the base forms hydroxide ions.
3. It will make hydrogen ions and NO3-
4.It tells you how acidic or basic a substance is and measures the amount of hydrogen ions.
5.Less.
2. The acids form hydrogen ions while the base forms hydroxide ions.
3. It will make hydrogen ions and NO3-
4.It tells you how acidic or basic a substance is and measures the amount of hydrogen ions.
5.Less.
Homework Part 3
1. Acids taste sour, turn litmus paper blue, conduct electricity, are corrosive.
2. Bases are slippery, bitter, turn litmus paper red, and conduct electricity.
3. An acid will turn litmus paper blue, while a base will turn it red.
4. If it has the word acid, or if it has the -ic suffix.
5. The fertilizer is corrosive to the skin, and could cause irritation since it is an acid.
2. Bases are slippery, bitter, turn litmus paper red, and conduct electricity.
3. An acid will turn litmus paper blue, while a base will turn it red.
4. If it has the word acid, or if it has the -ic suffix.
5. The fertilizer is corrosive to the skin, and could cause irritation since it is an acid.
Wednesday, December 1, 2010
Test 5 Balancing Act
Science Education
Results
Intermediate Level
Intermediate Level
|
Tuesday, November 30, 2010
Homework 10 Part 2
1. You divide the mass of the solute by the amount of solution. It is measured in moles. So 2moles/4 lters of liquid= solution of .5 mol/L
2.It shows the characteristics and properties of the substance easier.
3.amount of solute, temperature, pressure.
4.Solubility is dependent on temperature. It takes heat to make particles move and break apart.
5.Because it shows the characteristic property of matter.
2.It shows the characteristics and properties of the substance easier.
3.amount of solute, temperature, pressure.
4.Solubility is dependent on temperature. It takes heat to make particles move and break apart.
5.Because it shows the characteristic property of matter.
Homework 10 Part 1
1. Solution: a mixture in which a solute is dissolved into a solvent.
Colloid: a mixture in which all substances are evenly spaced microscopically.
Suspension: a mixture with solid particles that are bigger than one micrometer mixed with other substances. A suspension will eventually settle.
2. They separate, and are surrounded by other solvent fluids.
3. They cause the freezing point to lower and the melting point to raise. Ex. Salt on an icy road.
4. It would be a solution because the food-coloring(solute) into the universal solvent (water)
5. They raise the boiling point and lower the freezing point.
Colloid: a mixture in which all substances are evenly spaced microscopically.
Suspension: a mixture with solid particles that are bigger than one micrometer mixed with other substances. A suspension will eventually settle.
2. They separate, and are surrounded by other solvent fluids.
3. They cause the freezing point to lower and the melting point to raise. Ex. Salt on an icy road.
4. It would be a solution because the food-coloring(solute) into the universal solvent (water)
5. They raise the boiling point and lower the freezing point.
Friday, November 19, 2010
Correction Part 2
Ok, I changed my mind again......
My new answer for the AMount of Heat need is 209,000J, not 109,0000.. Sowwy for the mistake
My new answer for the AMount of Heat need is 209,000J, not 109,0000.. Sowwy for the mistake
Test 9
How is thermal energy related to temperature and heat?
Thermal Energy is the energy of particles in an object when they move around because of temperature and heat. Heat is the transfer of one thing to another, using radiation, convection, or conduction. Temperature is the measurement and expression of thermal energy and heat.
Why do some materials get hot more quickly than others?
Everything has a specific heat measurement. Specific heat is the amount of energy need to change a substance in temperature. Things that have higher specific heat need more energy and time to heat up than substances with low specific heats.
What are the three forms of heat transfer? Please describe each.
In a nutshell, the three forms of heat are conduction, convection, and radiation. Conduction is the transfer of heat through substances when they are not moving. An example of this is me holding a cold rock and it receiving heat. Convection is the movement of heat through molecules of fluids.
An example of this is a pot of water boiling. Radiation is the release and movement of heat through electromagnetic waves. An example of this would be a microwave.
How much heat is required to raise the temperature of 5kg's of water by 10kg's?
(turn in answer)
5. Tent or Fire?
I would choose a tent. The best way to stay warm is to trap the heat instead of created mass amounts of it. If you use your body heat and trap it using layers and a tent, then you will be able to stay warmer than standing near a large heat source, for that source's heat is expelled, and little of the heat actually reaches you.
Thermal Energy is the energy of particles in an object when they move around because of temperature and heat. Heat is the transfer of one thing to another, using radiation, convection, or conduction. Temperature is the measurement and expression of thermal energy and heat.
Why do some materials get hot more quickly than others?
Everything has a specific heat measurement. Specific heat is the amount of energy need to change a substance in temperature. Things that have higher specific heat need more energy and time to heat up than substances with low specific heats.
What are the three forms of heat transfer? Please describe each.
In a nutshell, the three forms of heat are conduction, convection, and radiation. Conduction is the transfer of heat through substances when they are not moving. An example of this is me holding a cold rock and it receiving heat. Convection is the movement of heat through molecules of fluids.
An example of this is a pot of water boiling. Radiation is the release and movement of heat through electromagnetic waves. An example of this would be a microwave.
How much heat is required to raise the temperature of 5kg's of water by 10kg's?
(turn in answer)
5. Tent or Fire?
I would choose a tent. The best way to stay warm is to trap the heat instead of created mass amounts of it. If you use your body heat and trap it using layers and a tent, then you will be able to stay warmer than standing near a large heat source, for that source's heat is expelled, and little of the heat actually reaches you.
Correction
On my homework, for one of my answers, i said fire in the beginning. I really meant tent. Sowwy!!!!
Thursday, November 18, 2010
Homework 9 Part II
IV.3. Because all of the energy is used to change the form of matter, so there is not enough thermal energy to melt the substance.
IV.4 As thermal energy increases, the particles vibrate, and the crystalized structure is broken, causing it to turn into a liquid.
IV.5 A potato has a lot of water. When water is heated, it expands. So the expansion causes the pressure to build up. If you don't poke holes in it, it will EXPLODE!!!!!
V.1Heat is transferred from the source, through the "working body" of the engine, to the sink, and in this process some of the heat is converted into work by exploiting the properties of a working substance (usually a gas or liquid). --> http://en.wikipedia.org/wiki/Heat_engine
V.2 They heat up differently. One uses insulators whilst the other uses convection. Although they both use heat to work.
V.3 External Combustion Engines heat up more.
V.4 Gas to a liquid.... Condensation
V.5 The cold would not escape, the heat would move in pushing the air out and making it hotter.
IV.4 As thermal energy increases, the particles vibrate, and the crystalized structure is broken, causing it to turn into a liquid.
IV.5 A potato has a lot of water. When water is heated, it expands. So the expansion causes the pressure to build up. If you don't poke holes in it, it will EXPLODE!!!!!
V.1Heat is transferred from the source, through the "working body" of the engine, to the sink, and in this process some of the heat is converted into work by exploiting the properties of a working substance (usually a gas or liquid). --> http://en.wikipedia.org/wiki/Heat_engine
V.2 They heat up differently. One uses insulators whilst the other uses convection. Although they both use heat to work.
V.3 External Combustion Engines heat up more.
V.4 Gas to a liquid.... Condensation
V.5 The cold would not escape, the heat would move in pushing the air out and making it hotter.
Wednesday, November 17, 2010
HomeWork 9, Bring the Heat!!!!! part 1
I.1 Fahrenheit, Celsius, and Kelvin.
I.2 Thermal Energy is the energy released when particles move quickly. Temperature is the expression and measurement of thermal energy and heat. Heat is the transfer of thermal energy from one thing to another.
So thermal energy controls heat and temperature, heat is the transfer of thermal energy changing temperature, and temperature is the measurement of the two, usually using thermometers.
I.3 Specific heat is the amount of energy needed to change a substance in temperature. If something has a high specific heat, then it needs a large amount of energy to change the temperature.
I.4 When you hold an ice cube, your hand transfers your body heat from your hand to the ice cube, causing it to exceed its melting point, turning it into a liquid.
I.5 Everything has a different specific heat. The lower it is, the quicker it will heat up. So the reason some things heat quicker is because they have a low specific heat. There are other factors such as conduction, but that is the main reason.
II.1 The mercury in the thermometers expand when it increases, causing the mercury to rise, hence the rising liquid within them.
II.2 They all give value of temperature. Celsius is based off of the boiling and freezing point of water. Kelvin is based off of absolute zero, while Fahrenheit is based of the freezing and melting point of a mixture of salt, water, and ice.
II.3 41 degrees F
II.4 460 degrees C
II.5 109,000 J
III.1 Conduction, Radiation, Convection
III.2 Hot to Cold. Always. Always.
III.3 Conductors transfer heat very well. Insulators trap and do not transfer heat.
III.4 Conductor. This is because metals are usually good conductors and heat travels through them very easily.
III.5 I would choose a fire. The best way to stay warm is to trap the heat instead of created mass amounts of it. If you use your body heat and trap it using layers and a tent, then you will be able to stay warmer than standing near a large heat source, for that source's heat is expelled, and little of the heat actually reaches you.
IV.1 Temperature, Pressure, and Heat Energy.
IV.2 It heats up, and eventually melts or burns.
II.3
I.2 Thermal Energy is the energy released when particles move quickly. Temperature is the expression and measurement of thermal energy and heat. Heat is the transfer of thermal energy from one thing to another.
So thermal energy controls heat and temperature, heat is the transfer of thermal energy changing temperature, and temperature is the measurement of the two, usually using thermometers.
I.3 Specific heat is the amount of energy needed to change a substance in temperature. If something has a high specific heat, then it needs a large amount of energy to change the temperature.
I.4 When you hold an ice cube, your hand transfers your body heat from your hand to the ice cube, causing it to exceed its melting point, turning it into a liquid.
I.5 Everything has a different specific heat. The lower it is, the quicker it will heat up. So the reason some things heat quicker is because they have a low specific heat. There are other factors such as conduction, but that is the main reason.
II.1 The mercury in the thermometers expand when it increases, causing the mercury to rise, hence the rising liquid within them.
II.2 They all give value of temperature. Celsius is based off of the boiling and freezing point of water. Kelvin is based off of absolute zero, while Fahrenheit is based of the freezing and melting point of a mixture of salt, water, and ice.
II.3 41 degrees F
II.4 460 degrees C
II.5 109,000 J
III.1 Conduction, Radiation, Convection
III.2 Hot to Cold. Always. Always.
III.3 Conductors transfer heat very well. Insulators trap and do not transfer heat.
III.4 Conductor. This is because metals are usually good conductors and heat travels through them very easily.
III.5 I would choose a fire. The best way to stay warm is to trap the heat instead of created mass amounts of it. If you use your body heat and trap it using layers and a tent, then you will be able to stay warmer than standing near a large heat source, for that source's heat is expelled, and little of the heat actually reaches you.
IV.1 Temperature, Pressure, and Heat Energy.
IV.2 It heats up, and eventually melts or burns.
II.3
Thursday, October 21, 2010
Instant Ice
There is this really cool chemical called Sodium Acetate. For some reason, when it is dissolved into water, then cooled down, it becomes sensitive to the touch. When you disturb the substance, it will instantly crystallize and become very warm. This is known as an exothermic reaction, because it gives off heat when taking place. Below is a link to a video that we should be doing. We should be performing the experiment in class tomorrow, so be there to see something really cool. And a big shout from Mr. Harrelson's last class of the day, WE ROCK MORE THAN YOU DO!!!!!!!!!!
Sunday, October 3, 2010
Tuesday, September 7, 2010
OOH, PRETTY!!!!!
When you look at this shiny compound, it makes you think of gems and jewelry. (Not my favorite subject, but it it is important to you females none the less.) I'm thinking of quartz, the second most abundant metal in the world. Its chemical symbol is SiO4, which means its basic chemical structure is made out of Silicone and four oxygen atoms. Its magical name came from the German/ Slavic word "twarc", which means hard in various translations. It is a silicate metal, and colors can be almost anything from white to black to blue to purple etc. It is brittle, which means it is easy to break. Many variations can be precious gems such as the Rose quartz, the onyx crystal, the agate gem, and the tigers eye.
-Below are pictures of quartz. Sources. Wikipedia.
-Below are pictures of quartz. Sources. Wikipedia.
Tuesday, August 31, 2010
Democritus Vs. Thomson
It's amazing how much a theory can advance over the centuries. Democritus, who was an ancient philosopher, started out with nothing for his theory on atoms. According to him, atoms were tiny particles that made up a substance and could not be divided. We now know that this is not true, for atoms are indeed made from smaller pieces and can also be divided. But in ancient Greece, the technology was not available for him to prove himself right. He introduced a theory, yet did not follow through with it. So the scientific method basically did not exist. The Greeks just nagged back and forth on whether they were correct or not.
Thomson was a more modern scientist. He was known as the father of quantum physics. Unlike Democritus, the scientific method did indeed exist. He was also known as the father of nuclear physics. He believed that the atom had a very tiny nucleus. Using the SCIENTIFIC METHOD (hint, hint) he proved his findings with the Gold Foil Experiment. He was also believed to be the first person to split an atom...
Sunday, August 29, 2010
Good Morning Science
I have a blog now. You can look at it, play with the little creatures, and do other stuff. **==
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