Monday, August 24, 2020
Biochemistry Atom and Covalent Bond
Organic chemistry Atom and Covalent Bond Organic chemistry: Atom and Covalent Bond- †Atoms Essay BIOCHEMISTRY NOTES -  †UNIT 2- †ATOMS ________________- †the basic unit of matter. Contains subatomic particles o _____________________ (+ charge) o _____________________ (no charge/neutral) o _____________________ (-  †charge) ELEMENTS AND ISOTOPES ___________________- †a pure substance that consists of only one type of atom. Elements are represented by a 1 or 2 letter symbol. (ie: C = carbon) The number of ___________________ in an element is that element’s _______________________. o The atomic number of carbon is 6, therefore carbon has 6 protons and consequently 6 neutrons. ISOTOPES _________________- †atoms of the same element that have different numbers of neutrons. o Isotopes are identified by their _________________________________________________ (ie: carbon- †12, carbon- †13, carbon- †14) The _____________________________________________ of the masses of an element’s isotopes is called its _____________________________. Isotopes have the same number of _______________________, so all isotopes of an element have the same ______________________________________. Mass Number- †the sum of the number of ________________________ plus the number of ________________________. Protons and neutrons have about the same mass. Electrons are much ________________. Atoms have equal numbers of __________________________ and ___________________________. o Because these particles are opposite charges, the whole atom is _______________. RADIOACTIVE ISOTOPES Some isotopes are _____________________________. This means that their nuclei are unstable and break down at a continuous rate over time. IONS _______________- †an atom that has gained or lost an electron, giving it a positive or negative charge. o ___________________- †a positively charged ion o ___________________- †a negatively charged ion CHEMICAL COMPOUNDS _______________________- †formed by the chemical combination of two or more elements in definite proportions. o Compounds are typically written as a __________________________________________ (ie: NaCl, CO2, etc.) This gives you the ratio elements in the compound. o The physical and chemical properties of a compound are usually very different from those of the elements form which it is formed. CHEMICAL BONDS ___________________________________- †f ormed when one or more electrons are transferred from one atom to another. o Form between a _____________________ and a
Saturday, August 22, 2020
Speech on smartphone free essay sample
Presentation: A cell phone is a cell phone based on a versatile working framework, with further developed figuring capacity and availability than an element telephone. The first cell phones consolidated the elements of an individual advanced collaborator (PDA), including email usefulness, with a cell phone. Later models included the usefulness of convenient media players, low-end minimal advanced cameras, pocket camcorders, and GPS route units to frame one multi-use gadget. Numerous cutting edge cell phones additionally incorporate high-goals touchscreens and internet browsers that show standard site pages just as portable enhanced destinations. Rapid information get to is given by Wi-Fi, portable broadband, NFC and Bluetooth. As of late, the fast improvements of portable application markets and of versatile business have been drivers of cell phone selection. SMARTPHONE’S HISTORY: Gadgets that consolidated communication and processing were conceptualized as ahead of schedule as 1973, and were offered available to be purchased starting in 1994. The term cell phone, be that as it may, didn't show up until 1997, when Ericsson portrayed its GS 88 Penelope idea as a Smart Phone. We will compose a custom paper test on Discourse on cell phone or on the other hand any comparative point explicitly for you Don't WasteYour Time Recruit WRITER Just 13.90/page The differentiation among cell phones and highlight telephones can be dubious, and there is no official definition for what comprises the contrast between them. One of the most critical contrasts is that the propelled application programming interfaces (APIs) on cell phones for running outsider application examine permit those applications to have better coordination with the telephones OS and equipment than is ordinary with highlight telephones. In correlation, include telephones all the more usually run on exclusive firmware, with outsider programming support through stages, for example, Java ME or BREW. An extra complexity is that the abilities found in fresher element telephones surpass those of more seasoned telephones that had once been advanced as cell phones. Kinds OF SMARTPHONE: TFT LCD: TFT represents Thin Film Transistor innovation. TFT LCDs are the most well-known kind of show units utilized across cell phones. TFT LCD offer better picture quality and higher goals contrasted with before age LCD shows yet their restriction lies in limited survey edges and poor perceivability in direct light or daylight. IPS-LCD: IPS represents In-Place Switching. IPS LCDs are better than ordinary TFT LCD shows with more extensive survey points and lower power utilization which prompts a significantly better battery life. IPS-LCDs are costlier than ordinary TFT LCD and subsequently are discovered uniquely on better quality cell phones. A higher goals (640 x 960 pixels) form of IPS LCD is utilized in Apple iPhone 4 and is called Retina Display on account of its splendid picture quality. Touchscreen LCD: Touchscreen LCD shows are of two sorts †Resistive and Capacitive. Resistive touchscreens contain two layer of conductive material with an exceptionally little hole between them which goes about as an obstruction. At the point when the resistive touchscreen is contacted with finger (or pointer) the two layers meet at the purpose of touch along these lines making a circuit at the purpose of touch. This data is perceived by the mobile’s processor/chip and gave to the mobile’s OS there by activating and occasion/activity at the purpose of touch. OLED: OLED represents Organic Light Emitting Diode and is a fresher innovation for presentations of mobiles and screens. In OLED innovation a layer of natural material (carbon based) is sandwiched between two directing sheets (an anode and a cathode), which thus are sandwiched between a glass top plate (seal) and a glass base plate (substrate). At the point when electric heartbeat is applied the two leading sheets, electro-luminescent light is created legitimately from the natural material sandwiched between. Brilliance and shading can change contingent upon the electric heartbeat. Gorilla Glass: Gorilla Glass is an uncommon salt aluminosilicate glass shield with excellent harm opposition that shields versatile showcases from scratches, drops, and knocks of regular use. Numerous organizations like Motorola, Samsung and Noki a are presently utilizing Gorilla Glass to make their versatile shows increasingly strong and solid. Favorable position OF SMARTPHONE: There are various points of interest to having a cell phone. Expanded availability is a significant bit of leeway of claiming a cell phone or at work. These telephones likewise coordinate contact data, which makes staying in contact with companions, family, and associates a lot simpler. Cell phones likewise decline the quantity of mechanical gadgets that experts like businesspeople and specialists need to convey. It was in the relatively recent past that we would see agents conveying, a PDA, a palm pilot, and a pager and now because of innovative advances the exorbitance is passã ©. The numerous applications offered forâ smartphones permit clients to redo their telephones with instruments that they will utilize, which have a more noteworthy range than the couple of preloaded applications that please conventional phones. These applications add to the better amusement for even the occasions when clients are holding up in line at stores. End: The security worries of cell phones might prompt moral issues at the work environment. At the point when you are utilizing cell phones to download reports from your telephone, your organization arrangement may be disallowing organization records to outcasts, yet a few people may be breaking the principals by downloading the work environment data on their telephone (2, 2010). You could likewise be breaking the organization approach by utilizing cell phones to record meeting or taking pictures (2, 2010). An ever increasing number of associations are breaking their organization approach by utilizing cell phones at working environment as opposed to utilizing an individual telephone gave by their organization.
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