Investigation of Positively and Negatively Charged Electrons
To try and find out if positively charged electrons deposit to the
negatively charged electrons. This means, the electrons in the cathode
attract electrons from the anode so they move towards the cathode from
the anode.
Prediction:
I think that as the electrons move from the anode to the cathode, the
mass of the anode to the cathode, the mass of the anode decreases
whilst the mass of the cathode increases.
I can support the point I've made above by faradays law which is:
Faraday's Second Law of electrolysis states that:
"The mass of an element deposited by one Faraday of electricity is
equal to the atomic mass in grams of the element divided by the number
of electrons required to discharge one ion of the element."
Hypothesis:
The mass of the anode should decrease whilst the mass of the cathode
should increase because positively charged electrons get attracted to
the negatively charged electrons. This too can be supported by
faradays law too:
Faraday's Second Law of electrolysis states that:
"The mass of an element deposited by one Faraday of electricity is
equal to the atomic mass in grams of the element divided by the number
of electrons required to discharge one ion of the element."
Independent variable:
Current flowing through the circuit and the Time the it stays in side
the beaker.
Dependent Variable:
Mass of the electrode
Control:
Amount of electrolyte
Apparatus:
· Crocodile clips
· Power pack
· 2 strips of copper
· 10ml silver nitrate
· resistor
· ammeter
· small beaker
· stop watch
Method:
First connect the power pack by plugging it in to the electric socket.
Then connect the crocodile clips to the power pack and from there
connect one piece the crocodile clip to one of the copper pieces.
Before you connect the copper strips to the crocodile clips weigh them
How can a man entangled in the dangerous crimes of smuggling, so engrossed with his past love that he lost her, and shed his own blood due to a misunderstanding ever be forgiven? In other words, should he be condoned for his acts, or should he forever be in Hell and forgotten? One might acknowledge the fact that this man's past, behavior, and intentions are unknown, therefore standing in either a positive or neutral view. Another might add that sins can never be forgiven, no matter what reasons had caused them, leaning toward a negative standpoint. Jay Gatsby, a character in F. Scott Fitzgerald’s novel The Great Gatsby, is much like the preceding man described, having faced the shame and committing the same dishonorable acts, and is often criticized by those in a negative standpoint. However, within the text, Nick Carraway, the narrator of the novel, plainly states, “Gatsby turned out all right at the end” (6). Nick knew all about the immoral deeds Gatsby had carried out, so how could Nick make this claim in honor of a dead man? The answer is quite simple: Nick realized Gatsby’s incorruptible dream was the most admirable feat out of all the characters in the book, something that not only made Gatsby respectable to Nick, but great.
Metals contain a sea of electrons (which are negatively charged) and which flow throughout the metal. This is what allows electric current to flow so well in all metals. An electrode is a component of an electric circuit that connects the wiring of the circuit to a gas or electrolyte. A compound that conducts in a solution is called an electrolyte. The electrically positive electrode is called the anode and the negative electrode the cathode.
Distance between the wick and the base of the copper calorimeter: this distance will be 5cm measured using a ruler and adjusted if necessary. The fuel has been weighed correctly: The fuel will be weighed twice, to ensure accuracy. Make sure there is the right amount of water in the copper calorimeter: to make sure the correct amount of water is in the copper I will use a measuring cylinder, I will accurately fill it to 100cm. I will place the cylinder on a flat surface just to check that the measurement is correct. Make sure fresh water has been placed in the container, so that it isn’t still warm and that the copper calorimeter is also cooled down: by making sure that the water has been tipped away straight after the experiment, should hopefully be enough to make sure it will be replaced, also as we have to note the temperature of the water before we start, it should be noticeable.
Two electrical wires * Stopwatch * Thermometer Method I put a piece of Elodea Canadensis (pond weed) in a test tube and covered it with water. The test tube was then placed in a beaker with a thermometer so that the water stayed the same temperature, this was then placed in a cardboard box with a bulb attached to a voltmeter by the electrical wires so that I could concentrate how much light the plant got. I varied the voltage (intensity) of the bulb and counted how many bubbles of oxygen were created at each voltage in one minute. I tested each voltage three times for accuracy for a minute each time. Results Preliminary Experiment Amount of bubbles Light intensity (lux)
of Copper Sulphate. To do this I plan to work out the amount of water
Obtain as close to .5g of copper wire, and record the mass to the closest mg. Make sure the wire is bent so it will lay as flat as possible in the bottom of a 250mL beaker. Then go to ¡§the hood¡¨ and add 4mL of 16M HNO3. Swirl the HNO3 around in the beaker with the copper until it has completely dissolved and you are left with a green/blue liquid. Then add 30mL of 3M NaOH and heat the solution on a ring stand with a Bunsen burner. The blue/green jelly will turn in to sort of a black dirt at the bottom of the beaker, make sure to stop boiling when the jelly turns black. Decant all excess liquid in the beaker. Do not remove any black precipitate. Add approximately 200mL of hot deionized water to the black precipitate. Decant all excess liquid again. Add 15mL of 6M H2SO4 and then under ¡§the hood¡¨ add 2g of Zinc metal to the solution. Once the Hydrogen has stopped bubbling add 10mL of HCl. Decant all excess liquid and transfer Copper metal to a glass dish and wash with deionized water. Rewash Copper metal with 5mL of Methanol. Decant and dry Copper metal on a hot plate, weigh and record results to nearest mg.
Copper wire, bare, 24-gauge, 9 V battery, 9 V battery clip, and more. I am going test each liquid to see which liquid has more electrolytes, and by knowing that it will help me find out which is better for you. I believe by doing this experiment it will help me see if my hypothesis is right or
Time - The longer time can let more copper ions from the anode to the cathode if the current are the same. There are still more factors which can affect the mass deposited during electroplating. 3). Distance between two electrodes - If the distance between the two electrodes is greater, the copper ions require to travel more from the anode to the cathode.
Part C -- The copper and silver half cells were exchanged and the liquid levels were adjusted. The Ecell and polarity were measured and recorded. The half-cell reactions and the equation were written. The Eo was also calculated.
The higher the value of the ionization energy, the more difficult it is to remove the electron As electrons are removed, the positive charge
Volume's Effect on a Copper Sulphate Solution We are trying to find out if the current though a copper sulphate solutions volume is increased. To find this information out I shall perform an experiment using the following equipment; · 1 power pack · 1 beaker · 2 carbon rods for anode and cathode · 1 ammeter · 1 measuring cylinder · 2 crocodile clip wirers I shall also be using 60cm3 volume of copper sulphate in my preliminary results to decide upon the concentration of copper sulphate and the voltage I shall use. The following diagrams show the step by step process in which I will do my experiment; [IMAGE] [IMAGE] [IMAGE] [IMAGE] I will take 10 readings from 10cm3 to 100cm3. I will repeat my experiment to give my experiment a fair average. I will keep the power pack the beaker the carbon rods the crocodile clips the ammeter the concentration of copper sulphate and the measuring cylinder the same each time I do the experiment this experiment.
Plato accounts for the discussion between the famous philosopher, Socrates, and the skilled rhapsode, Ion in his Ion. The two explore an abstract idea that, during primitive times, was controversial and arose in many conversations as useless and unappreciated. This idea of art carries through the text as Socrates mocks Ion, along with all the other rhapsodes and artists, regarding their “untruthful” and “unskillful” profession. He calls them “light and winged and sacred things” that are “unable ever to indite until he has been inspired and put out of his senses” while breaking down his theory to Ion (534b). But Plato really presents the point of his view when he states “rhapsodes and actors, and the men whose poems they chant, are wise; whereas
In the experiment there are several possible ways of changing the electric current such as changing the voltage or the position of the electrodes within the electrolysis cell. However, it was found from preliminary work that the most effective way to change the current was to change the concentration of the acid solution. The preliminary work showed that the greater the concentration of the acid, the greater the current. Ohm's law states that R(resistance) =
Humans these days take electricity for granted. We don’t truly understand what life was like without it. Most young adults will tell you their life does not depend on electricity, but they aren’t fooling anyone. They all know that their life depends on electricity; whether it’s television, their phone, Google, or the lights in their house. We need to stop taking those things for granted and give credit where credit is due. That is why I chose to write about the scientists who contributed to the discovery of electricity, which then helped modern scientists fuel the electricity phenomenons we now have today.
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