Tanishka's part- Last 15 words Flashcards
Electron to Photosynthesis
About two and a half of these particles are released upon the fission of U-238. An experiment discrediting the gamma ray hypothesis proved the existence of these particles and was carried out by James Chadwick. Isotopes of an element differ in the number of, for the point, what subatomic particle with no electric charge?
Electron
This particle, which comes in “thermal” and “fast” varieties, is the only particle to date observed to undergo beta decay. This particle can be slowed down using moderators in a reactor. Two down quarks and one up quark makeup this particle. Adding this particle to an element creates an isotope of that element. For the point, name this particle that makes up the atomic nucleus with protons.
Electron
These particles consist of one up quark and two down quarks, and stars named for these particles are supported by their namesake degeneracy pressure. Uranium fission is initiated by the absorption of one of these particles, and after fission, more of these particles are released to sustain a chain reaction. For the point, name these uncharged subatomic particles which make up the atomic nucleus with protons.
Electron
A paper by this scientist proposed a new calculation for mean squared displacement of particles. That paper on Brownian motion and another on mass-energy equivalence were half of this man’s 1905 “Annus Mirabilis.” For the point, name this scientist who, in that same year, published explanations of the photoelectric effect and special relativity.
Einstein
The namesake “law of” these devices states that the torque applied to both sides of these devices must be equivalent. These devices are divided into Classes 1, 2, and 3 based on the location of the fulcrum. These devices derive more mechanical advantage from having longer arms, which reduce the amount of force needed to be applied over a longer distance. For the point, name these simple machines exemplified by a seesaw.
Lever
Assuming the chord is weightless and using two masses produces an Atwood Machine, which is in this class of machines that also includes block and tackle systems. This machine consists of a wheel on a fixed axle with a groove to support a sliding rope. For the point, name this simple machine whose name comes from the action performed on the rope to lift up an object.
Pulley
It combines with acids to form ammonium salts. A stable binary hydride and the simplest pnictogen hydride, ammonia is a colourless gas with a distinct pungent smell. Biologically, it is a common nitrogenous waste, and it contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to fertilisers.Around 70% of ammonia produced industrially is used to make fertilisers in various forms and composition, such as urea and diammonium phosphate. Ammonia in pure form is also applied directly into the soil.
Ammonia
Biological nitrogen fixation is only performed by a few families of microorganisms, the diazotrophs. The Haber process that enabled industrial production was invented at the beginning of the 20th century, revolutionizing agriculture. ammonia is also found throughout the Solar System on Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto, among other places: on smaller, icy bodies such as Pluto, ammonia can act as a geologically important antifreeze, Crystals of ammonium bicarbonate have been found in Patagonia guano. The fermentation of urine by bacteria produces a solution of ammonia; hence fermented urine was used in Classical Antiquity to wash cloth and clothing, to remove hair from hides in preparation for tanning, to serve as a mordant in dying cloth, and to remove rust from iron. It was also used by ancient dentists to wash teeth
Ammonia
city of Alexandria was a center of alchemical knowledge; an ancient branch of natural philosophy, a philosophical and protoscientific tradition that was historically practiced in China, India, the Muslim world, and Europe; Alchemists attempted to purify, mature, and perfect certain materials; Mary Anne Atwood and Ethan Allen Hitchcock, who independently published similar works regarding spiritual alchemy. Chrysopoeia
Alchemy
Even so, pure native nickel is found in Earth’s crust only in tiny amounts, usually in ultramafic rocks,[5][6] and in the interiors of larger nickel–iron meteorites that were not exposed to oxygen when outside Earth’s atmosphere. Nickel was first isolated and classified as an element in 1751 by Axel Fredrik Cronstedt, who initially mistook the ore for a copper mineral, in the cobalt mines of Los, Hälsingland, Sweden. ni is ferromagnetic at about room temperature. Alnico permanent magnets based partly on nickel are of intermediate strength between iron-based permanent magnets and rare-earth magnets.
Nickel
__________ is a chemical element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid that melts to form a deep violet liquid at 114 °C (237 °F), and boils to a violet gas at 184 °C (363 °F). The element was discovered by the French chemist Bernard Courtois in 1811 and was named two years later by Joseph Louis Gay-Lussac, after the Ancient Greek Ιώδης ‘violet-coloured’.
Iodine
The dominant producers of iodine today are Chile and Japan. Due to its high atomic number and ease of attachment to organic compounds, it has also found favour as a non-toxic radiocontrast material. Because of the specificity of its uptake by the human body, radioactive isotopes of iodine can also be used to treat thyroid cancer. Iodine is also used as a catalyst in the industrial production of acetic acid and some polymers.
Iodine
__________ are phenomena on the Sun’s photosphere that appear as temporary spots that are darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic flux that inhibit convection. Sunspots appear within active regions, usually in pairs of opposite magnetic polarity.[2] Their number varies according to the approximately 11-year solar cycle.
Sun spots
In chemistry, a ____________ is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. If the attractive forces between the solvent and solute particles are greater than the attractive forces holding the solute particles together, the solvent particles pull the solute particles apart and surround them.
Solution
_____________ is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see, or by disguising them as something else. Examples include the leopard’s spotted coat, the battledress of a modern soldier, and the leaf-mimic katydid’s wings. A third approach, motion dazzle, confuses the observer with a conspicuous pattern, making the object visible but momentarily harder to locate, as well as making general aiming easier.
Camouflage
