Final iodine1
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The document discusses the element iodine, including its discovery in 1811 by Bernard Courtois who was looking for a way to produce gunpowder for Napoleon's army. Iodine is used in some medications, as a disinfectant, in dyes, catalysts and photography. It provides important nutrients to the human body by nourishing the thyroid gland.
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This document discusses the alkali and alkaline earth metals. It describes their location on the periodic table and their similar reactive properties. The alkali metals include lithium, sodium, potassium, rubidium, cesium, and francium. They are soft, reactive metals that are good conductors. The alkaline earth metals include beryllium, magnesium, calcium, strontium, barium, and radium. They have an oxidation state of +2 and are also very reactive. Both groups of metals are described in more detail with their discoveries, properties, and common uses. Melting and boiling points are also provided for each element.
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Solution
1) Alkali metal cation :- Li + (Lithium) , Na + (sodium),K + (potassium),Rb + (Rubidium),Cs + (Caesium), Fr + (Francium)
Alkaline earth metals :- Be 2+ (Beryllium) ,Mg 2+ (Magnesium) , Ca 2+ (Calcium) , Sr 2+ (Strontium) , Ba 2+ (Barium) , Ra 2+ (Radium )
2) The group 1 metals did not tend to form precipitates easily
The group 2 metals did tend to form precipitates easily.
3) F - is present in toothpaste . Commonly SnF 2 is present in toothpaste.
Fluoride is F - ; Fluorine is F 2
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Energy Matter Bonding.pptld,bmldmrl,ml,lr
This document is an outline for a chemistry unit on energy and matter. It includes guiding questions about why substances have different boiling and freezing points and why salt is used on roads. The outline lists topics like the states of matter, bonding, and energy. Measurement concepts like calorimetry and different types of energy are addressed. Materials are classified as ionic, metallic or covalent based on their bonding properties. Chemical and physical changes and reactions are distinguished.
Energy Matter Bonding.ppt
This document is an outline for a chemistry unit on energy and matter. It includes guiding questions about why substances have different boiling and freezing points and why salt is used on roads. The outline lists topics like the states of matter, bonding, and energy. Measurement concepts like calorimetry and different types of energy are discussed. The document provides a table of contents and links to additional resources on the topic.
Module 2 elements-and-compounds
The document provides information about elements and compounds for 7th grade science. It begins by outlining the objectives of describing elements and compounds, explaining the difference between them, and citing examples. It then defines matter and discusses the three states of matter. It explains that elements are pure substances that cannot be broken down further, while compounds are formed by combining two or more elements. The document provides numerous examples of elements and compounds. It also discusses the periodic table and properties of metals, nonmetals and metalloids.
Noble metal to nobel prize
STATE TO EXPLAIN.....
Noble Metal
Nobel prize
Nobel Laureates Nobel Prize for Noble Metal
Advance Metal catalyzed reaction
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Chemistry Unit 2 Part 5 - The Representative Elements
Chemistry Unit 2 Part 5 - The Representative Elements
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Final iodine1
- 2. BondBook Iodine is looking for an Elemental Bond ! Wall Photos Uses History Trends Logout Photos of Iodine Send Iodine a message Poke Iodine Wall Info Photos Family Write something… Share Information Discovered: 1811 Atomic Number: 53 Average Atomic Mass : 126.90447 Classification : Non-Metal Isotopes (37) Iodine for those who don ’t know, my stable isotope mass number is 127. Bromine What’s up fam? Are you going to the Halogen family reunion? I - Ay yo! Can an isotope get a shout out? Man I am the most appearing in nature! October 28, 2011 Iodine wants a bonding relationship! October 9, 2011 October 29, 2011 October 28, 2011 Iodine Learn your configuration! @Electro.net #Not SPAM! October 9, 2011
- 4. BondBook Wall Photos Uses History Trends Logout Wall Info Photos Family Photos of Iodine 7 Photos Iodine’s Albums 3 Photo Alums Lewis Dot Structure 5 photos Isotopes(Bohr Models) 37 photos Profile Pictures 1 photo Iodine is looking for an Elemental Bond !
- 7. BondBook Discovery Wall Photos Uses History Trends Logout In 1811 when Bernard Courtois discovered iodine, iodine is used in some medication but the discoverer wasn’t searching for a way to cure humans. Actually, Bernard was looking for a way to kill humans. Napoleons’ army was running low on gunpowder, which is, Saltpeter (potassium nitrate—KNO3—sometimes) is a major component in gunpowder and requires an abundant source of potassium carbonate in order to be manufactured. Potassium carbonate is extracted from wood ashes, but the war had gone on so long that they’d run out of willow wood, the preferred source. Someone suggested using dried seaweed (burnt to ash).
- 8. BondBook Wall Photos Uses History Trends Logout Wall Info Photos Family Iodine is looking for an Elemental Bond ! Atomic Radius Ionization Energy Electronegativity