Chapter 6: Chemical Bonds Section 6.1: Ionic Bonding Chemical bond: the force that holds atoms of elements and ions together to become a stable‚ new substance called a compound. -the number of valence electrons determines if an atom will form a chemical bond. -metals tend to give up electrons to other atoms. -nonmetals tend to take electrons from other atoms. -noble gases will not form a chemical bond because these atoms already have a full outer shell of energy. Ionization: the
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Computer The Determination of a Chemical Formula 1 Second‚ you will conduct a chemical reaction with the dried sample‚ which will produce elemental copper. By measuring the mass of copper that forms‚ you will have the necessary information to determine the moles of copper and chlorine in your sample‚ and you will be able to establish the proper chemical formula. OBJECTIVES • • • In this experiment‚ you will Ev al Determine the water of hydration in a copper chloride hydrate
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Danger: Chemical Sunscreens Sunscreen is meant to be a product designed to protect the skin from the sun. The first form of sunscreen was a red‚ petroleum jelly like substance that was mainly used to aid troops during WWII‚ it then transformed into a sort of pasty‚ white substance of zinc oxide. As the years passed and society began to evolve into one that craved sun kissed skin‚ many companies started to brainstorm in search of a new kind of sunscreen. The formula they aimed for was one that protected
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Diamond Chemicals PLC (A): The Merseyside Project Late one afternoon in January 2001‚ Frank Greystock told Lucy Morris‚ “No one seems satisfied with the analysis so far‚ but the suggested changes could kill the project. If solid projects like this can’t swim past the corporate piranhas‚ the company will never modernize.” Morris was plant manager of Diamond Chemicals’ Merseyside Works in Liverpool‚ England. Her controller‚ Frank Greystock‚ was discussing a capital project that she wanted to propose
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which out of the four balanced chemical equations best represent the thermal decomposition of sodium bicarbonate. The guiding question will be answered with the outcome of the sodium bicarbonates thermal decomposition and it being plugged in into the four balanced chemical equations. John Dalton atomic theory explains two fundamental laws of chemistry which are the law of conservation of mass and the law of definite proportions. The atomic theory states that a chemical reaction is simply a rearrangement
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Upon the rise of Adolf Hitler and the Nazi Party in Germany‚ gay men and‚ to a lesser extent‚ lesbians‚ were two of the numerous groups targeted by the Nazis‚ and ultimately became some of the millions victimized by the Holocaust. Since the development of the Gestapo in 1933‚ gay organizations were banned‚ any books about homosexuality (or sexuality in general) were burned‚ and homosexuals within the Nazi Party itself were murdered. In late February 1933‚ the Nazi Party launched its purge through
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Political opposition was oppressed in Nazi Germany‚ as the Nazi party was the only legal party. Night of the long knives is an example of ultra-nationalism as it was a great purge claiming the lives of many people that may have opposed Hitler‚ or that Hitler feared had the power to remove him as Further. Censorship is needed in ultranationalism‚ as a government needs total control in order to be in complete power. In Nazi Germany the aim of censorship was simple: to reinforce Nazi power
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Classifying Chemical Reactions Purpose: The purpose of this experiment is to observe a variety of chemical reactions and to identify patterns in the conversion of reactants into products. Apparatus: • Bunsen or lab burner -Test tube clamp • Butane safety lighter - Test tube rack • Evaporating dish - Wash bottle • Forceps or crucible tongs - Wood Splints • Heat resistant pad • Litmus paper • Pipets • Spatula • Test tubes Materials: Ammonium carbonate‚
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Chemical Reaction:- The transformation of chemical substance into another chemical substance is known as Chemical Reaction. For example: rusting of iron‚ setting of milk into curd‚ digestion of food‚ respiration‚ etc. In chemical reaction new substance is formed which is completely different in properties from the original substance‚ so in a chemical reaction chemical change takes place. Following are the signs of chemical reaction: (a) Change of state of substance. (b) Change of colour of substance
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The turbulence of the early and mid-20th century spawned some of the most extremist ideologies to ever guide major world powers. On the left‚ the Soviet Union gripped eastern Europe with its militant enforcement of communism. On the right‚ Nazi Germany sought to assert its rule of racial hierarchy across the continent. The struggle for these states to achieve their respective ideals of utopia manifested in death tolls that reached millions. While many contemporary scholars point to the differences
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