learn some descriptive chemistry. Cations are Alkali and Alkaline earth metals group‚ they are quite easily excited to higher energy states such that the energy supplied is sufficient. Alkali and Alkaline earth metals are very reactive metals that do not occur freely in nature. To investigate or verify the above concept an experiment was conducted with the following objectives: (1) perform flame and confirmatory tests on alkali and alkaline earth ion and ion (III) ion (2) identify the substances
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Vidyamandir Classes ANSWERS - JEE MAINS Test - 1/IITJEE-2014 CHEMISTRY 1 D 11 D 21 C 2 D 12 C 22 B 3 D 13 B 23 D 4 C 14 C 24 B 5 C 15 B 25 B 6 B 16 C 26 B 7 A 17 C 27 B 8 B 18 D 28 A 9 D 19 D 29 B 10 A 20 C 30 D PHYSICS 31 C 32 C 33 A 34 B 35 CANCEL 36 A 37 C 38 B 39 C 40 C 41 A 42 C 43 D 44 C 45 C 46 C 47 C 48 C 49 C 50 D 51 A 52 D 53 C 54 A 55 C 56 B 57 B 58 D 59 D 60 B
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BERYLLIUM Beryllium is a hard and brittle alkaline earth metal‚ which is greyish in colour‚ and an excellent thermal and electrical conductor. The melting point of beryllium is 1278°C‚ the boiling point is 2970°C. There is a fine layer of beryllium oxide covering it’s surface so it will not react with water or steam. However‚ it will react with oxygen when heated to around 600°C. Beryllium originally named glucinium‚ which derives from the Greek word “glykys”‚ which means sweet. This
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state of matter is solid. It is located in the second group called the alkaline earth metals. Magnesium is found in seawater‚ salty layers and in many rock minerals. IT could be used as metal. It’s the third most abundant structural metal in the earth’s crust‚ only exceeded in aluminum and iron.Magnesium readily ignites upon heating in air and burns with a dazzling white flame. To extinguish the flame water should not be used. Alkaline earth metal salts in general‚ are less soluble in water than the corresponding
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Distilled water b. Purified water d. Alkaline water 3. Do you already have an alkaline water dealer? a. Yes b. None If yes please specify: _______________________ 4. How many containers of water do you consume in a week? a. 2 c. 4 b. 3 d. 5 5. How much are you willing to pay? a. Php 25-30 b. Php 30-35 6. If we offer alkaline water‚ are you willing to try? a. Yes b. No 7. Are you familiar with the different health benefits of alkaline water like: -flushing out body toxins
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How ever hard it seems always remain subsistent and take control of your day headstrong‚ and never worry about the millions of things you don’t have....live in the spectacular NOW.... People believe that trouble is far away but it is here to stay and cannot be redirected any way that you may wish Net ionic equations are equations that show only the soluble‚ strong electrolytes reacting (these are represented as ions) and omit the spectator ions‚ which go through the reaction unchanged. When
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Experiment 2: The Alkaline Earths and the Halogens: Two Families in the Periodic Table Lab Report By: YOU Introduction: The purpose of this lab was to find the relative solubilities of some salts of the Alkaline Earths and use that information to find the order which they appear in the periodic table; also use that information to efficiently find an unknown alkaline earth halide. Also to find the relative oxidizing powers of the Halogens given and using that information finding the order of
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Keith Fleming 9/30/14 Families of Elements Pre-lab I. Purpose- The purpose of this lab is to identify elements and observe similarities shared between them. II. Safety- In this lab the needed safety materials required are safety goggles and apron. Also its suggested to wash hands after dealing with any of the chemicals. some chemicals with safety hazards we will be working with are Sodium chloride with is slightly toxic if ingested. Sodium Bromide which is slightly toxic if inhaled or ingested
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Rubidium (Rb) History Rubidium was discovered (1861) spectroscopically by German scientists Robert Bunsen and Gustav Kirchhoff and named after the two prominent red lines of its spectrum. Rubidium and cesium often occur together in nature. Rubidium‚ however‚ is more widely scattered and seldom forms a natural mineral; it is found only as an impurity in other minerals‚ ranging in content up to 5 percent in such minerals as lepidolite‚ pollucite‚ and carnallite. The primary difficulty associated
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Experiment Five – Group Chemistry The Alkaline Earths and the Halogens: Two Families in the Periodic Table Prelaboratory Questions 1. All of the common noble gases are monatomic and low-boiling. Their boiling points in °C are: Ne‚ –245; Ar‚ –186; Kr‚ –152; Xe‚ –107. Using the Periodic Table‚ predict as best you can the molecular formula and boiling point of radon‚ the only radioactive element in this family. _______________________ ____________________°C Molecular Formula
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