SUMMARY: Students will make functional electrical cells (i.e., batteries) and determine the relative strength of each type of cell. KEY STANDARDS: PS2.B: Types of Interactions Attraction and repulsion between electric charges at the atomic scale explain the structure, properties, and transformations of matter, as well as the contact forces between material objects. (HS-PS2-6) Students will apply their knowledge of attraction and repulsion between electric charges when testing electrical cells and responding to reflection questions. HS-PS2-6: Communicate specific technical information about why the molecular level structure is important in the functioning of designed materials. KEY PRACTICES/SKILL STANDARDS ADDRESSED: Structure
Electricity is an interesting subject. There is so much you can learn from it, like how our lights turn on or how we make cell phones. This is all a mystery until we finally get a little bit of information in our brains. I've just read two articles, "Energy Story" and "Conducting solutions". I also watched a video called Hands-on Science with Squishy circuits. I learned so much valuable information from these resources.
Journal Entry #1 Wiesel says this because he wants to keep the Holocaust from happening again. He probably meant that it is selfish to keep something to yourself when it is important and you can prevent it from happening. When he was being tortured, the other citizens did nothing to help. Maybe he just wants to make up for what others did not do for him. I agree and disagree with his statement.
Miodownik describes in detail how natural elements were manipulated by man to create man-made materials at the same minuscule scale that take place naturally. Materials science has provided the knowledge required for
Three simple questions to get students thinking about intermolecular forces are listed at the end of the lab:
These reasons are why Lithium-Ion Batteries are some of the most viable options when designing new gadgets. But, the structure of these batteries are why these batteries are being used for new gadgets. A Lithium-Ion Batt...
An atom, by definition, is the smallest part of any substance. The atom has three main components that make it up: protons, neutrons, and electrons. The protons and neutrons are within the nucleus in the center of the atom. The electrons revolve around the nucleus in many orbitals. These orbitals consist of many different shapes, including circular, spiral, and many others. Protons are positively charged and electrons are negatively charged. Protons and electrons both have charge of equal magnitude (i.e. 1.602x10-19 coulombs). Neutrons have a neutral charge, and they, along with protons, are the majority of mass in an atom. Electron mass, though, is negligible. When an atom has a neutral charge, it is stable.
Also, I will know what a chemical and physical property is and I will know how to find them out. Materials = == == ==
A battery is a device which converts chemical energy into electrical energy. A battery usually consists of two or more cells connected in series or parallel, you can also have a single cell battery. All cells consist of a positive electrode, and a negative electrode. An electrolyte is a liquid substance capable of conducting electricity. In this substance one of the electrodes will react producing electrons, while the other will except electrons. When the electrodes are connected to a device to be powered, called a load, an electrical current flows.
A E Bate 1938 Proc. Phys. Soc. 50 293-297. [Online Preview]. Available: http://www.iop.org/EJ/abstract/0959-5309/50/2/315 [20 July 2009]
1 David Halliday, Robert Resnick, and Jearl Walker, Fundamentals of Physics, Extended, 5th ed. (NewYork:Wiley, 1997) 361
Coulomb's law is a law of physics describing the electrostatic interaction between electrically charged particles. It was studied and first published in 1783 by French physicist Charles Augustin de Coulomb and was essential for the development of the theory of electromagnetism.
American Institute of Physics. Vol. 1051 Issue 1 (2008). Academic Search Premier.> 224. http://login.ezproxy1.lib.asu.edu/login?url=http://search.ebscohost.com.ezproxy1.lib.asu.edu/login.aspx?direct=true&db=aph&AN=34874307&site=ehost-live.
In 1897, a little more the one hundred years ago, the electron was first discovered. With the discovery of the electron came the discovery of the neutron roughly thirty-five years later. These two discoveries were very important to the furthering of quantum mechanics. Without these discoveries, quantum mechanics would not have become something so important. Quantum mechanics is the branch of mechanics that deals with the mathematical description of the motion and interaction of subatomic particles. "Atoms and photons are intrinsically quantum mechanical, so it 's no surprise if they behave in quantum mechanical ways.”
middle of paper ... ... We lack an understanding of the anatomy of atoms, and how they are made up of a nucleus with surrounding electrons, and the influence they have on the world around us, and how it works. The importance of electrons would not be appreciated, nor their relevance to experiments on the theory of matter. Works Cited 1) Anthony Carpi, Ph.D. "Atomic Theory: The Early Days," Visionlearning Vol.
For this laboratory experiment, the objectives are to describe the seats of electromotive force or EMF, and to know the difference between the EMF and terminal voltage. Also, one of the objectives of this experiment is to know the significance of internal resistance and how this internal resistance differentiate a real battery from an ideal battery. These objectives can be accomplished by knowing how to measure the EMF of a battery and by calculating the internal resistance of the battery.