Atomic theory is the idea that matter is made up of small particles made of atoms. The atomic theory first had 5 points which were stated by John Dalton who came up with it. The first one was that all elements were made up of small units called atoms. The second one was that all atoms of a given element are identical to each other. Third‚ all the atoms were different from all the other atoms. Fourth‚ atoms of different elements combined together in equal numbers to form compounds. Fifth and final
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Introduction What is a Multinational Corporation (MNC’s)? Multinational companies are firms with their home base in one country and operations in many other nations. Most of these very immense firms establish in third word countries or developing countries where they could manufacture the same identical product for very low costs compared to establishing the same firm in the western countries producing that product. Although transnational corporations (TNC’s) are commonly thought to be synonymous
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In the book The Immortal life of Henrietta Lacks by Rebecca Skloot. The author tells the story of a women whose cells were used for scientific experiments. The story begins with the main character‚ Henrietta Lacks‚ who is going to John Hopkins Hospital to have a lump on her cervix looked at by doctors. Henrietta had been experiencing pain since the birth of her fourth child. She has several theories as to what is causing this pain‚ such as complications with childbirth or an STD which she may have
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1. Hydrogen Name: Hydrogen Atomic number: 1 Atomic Weight: 1.00794 grams/mole Standard state: gas at 198 K Hydrogen is the lightest Hydrogen is the lightest element. It is by far the most abundant element in the universe and makes up above 90% of Universe by weight. Hydrogen as water (H2O) is absolutely essential to life and it is present in all organic compounds. Hydrogen is lightest gas. Hydrogen gas was used in lighter-than-air balloons for transport but is far too dangerous because
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------------------------------------------------- Antoine Henri Becquerel (15 December 1852 – 25 August 1908) was a French physicist‚ Nobel laureate‚ and the discoverer of radioactivity along with Marie Skłodowska-Curie and Pierre Curie‚[1] for which all three won the 1903 Nobel Prize in Physics. Biography [edit]Early life Becquerel was born in Paris into a family which produced four generations of scientists: Becquerel ’s grandfather (Antoine César Becquerel)‚ father (Alexandre-Edmond Becquerel)
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19) BF3 20) AlP 21) Rb2O 22) CaI2 23) Cs2O 24) MgI2 25) LiCl 26) BeBr2 27) Na2O 28) CaF2 29) BP 30) Al2O3 1) magnesium sulfide 2) potassium bromide 3) barium nitride 4) aluminum oxide 5) sodium iodide 6) strontium fluoride 7) lithium sulfide 8) radium chloride 9) calcium oxide 10) aluminum phosphide 11) potassium sulfide 12) lithium bromide 13) strontium phosphide 14) barium chloride 15) sodium bromide 16) magnesium fluoride 17) sodium oxide 18) strontium sulfide 19) boron nitride 20) aluminum
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Chapter 1 * What is Chemistry? -it is the study of the composition of substances and the changes they undergo. * What are the 5 branches of chemistry? * Organic chemistry‚ inorganic chemistry‚ analytical chemistry‚ physical chemistry‚ biochemistry. * What is the difference between a theory and law? -a theory is a thoroughly tested explanation of why experiments give certain results. A scientific law is a concise statement that summarized the results of a broad spectrum of observations
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There are many types of radiation and radioactive emissions in the world wide that can be used in medicine. Iodine-131 has a big effect and usage for medicine where it has 53 protons‚ 53 electrons and 78 neutrons. Iodine-131 has varied uses in medicine where it is utilized as a part of atomic pharmaceutical restoratively and can likewise be seen with symptomatic scanners in the event that it has been utilized remedially. Iodine-131 they can be promptly followed even in moment amounts with such discovery
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Antimony(Sb) 51 122 (+3‚+5) Magnesium(Mg) 12 24 (+2) Bismuth(Bi) 83 209 (+3) Calcium(Ca) 20 40 (+2) Oxygen(O) 8 16 (-2‚-1‚-1/2 Strontium(Sr) 38 88 (+2) Sulphur(S) 16 32 (2‚4‚6) Barium(Ba) 56 137 (+2) Selenium(Se) 34 79 (-2) Radium(Ra) 88 226 (+2) Tellurium(Te) 52 127.6 (-2) `Boron(B) 5 11 (+3‚-5} Flourine(F) 9 19 (-1) Aluminium(Al) 13 27 (+3) Chlorine(Cl) 17 35 (-1) Gallium(Ga) 31 70 (-3) Bromine(Br) 35 80 (-1) Indium(In) 49 115 (-3) Iodine(I)
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Eggs 5 Radioactivity was discovered by Henry Bacquerel 6 The metal used in storage batteries is Lead 7 The instrument used to measure the relative humidity of air is Hygrometer 8 Barometer was invented by Torricelli 9 The unit of power is Watt 10 Radium was discovered by Marie and Pierrie Curie 11 The existence of isotopes was discovered by Frederick Soddy 12 Dynamo was invented by Michael Faraday 13 The nuclear reactor was invented by Enrico Ferni 14 The law of gravitation was propounded by Sir
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