Ionic Reactions Introduction: Today we are going to observe the chemical changes when mixing two solutions. Some will change colors‚ produce gases proving if the solutions are soluble or insoluble. Materials and Methods: I first pulled out the small wells and place two drops of the Cobalt (II) Nitrate in seven of the wells. I then moved to the next row and placed two drops of Copper (II) Nitrate in the next row‚ into seven of the wells‚ and so on with the other three Nitrates. I then cut off
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stone columns. The three shown above can be identified by the top part of the column. Doric columns are plain on top. Ionic columns have scrolls and Corinthian has carved stone leaves. We still use these styles in Washington‚ DC; the Lincoln Memorial has Doric columns‚ the Jefferson Memorial has Ionic columns‚ and the Supreme Court has Corinthian columns. Doric Column Ionic Column Corinthian Column
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reduce crime all over the UK. One of the main targets of the Labour Party was the rising number of Anti -Social incidents reported to the police every day. In order to combat this growing phenomenon that is today’s ’Youth Culture’‚ the ASBO was created. The ASBO - or Anti Social Behaviour Order‚ to quote its official name - is a civil order made against a person who has been shown to have participated or initiated in anti social behaviour. This is defined as "conduct which caused or was likely to
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Chemical Bonding Lab Chemical compounds are combinations of atoms held together by chemical bonds. These chemical bonds are of two basic types—ionic and covalent. Ionic bonds result when one or more electrons from one atom or group of atoms is transferred to another atom. Positive and negative ions are created through the transfer. In covalent compounds no electrons are transferred; instead electrons are shared by the bonded atoms. The physical properties of a substance‚ such as melting point
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Chemistry: A Molecular Approach (Tro) Chapter 9 Chemical Bonding I: Lewis Theory 1) Which of the following represent the Lewis structure for N? A) [pic] B) [pic] C) [pic] D) [pic] E) [pic] Answer: A 2) Which of the following represent the Lewis structure for Cl? A) [pic] B) [pic] C) [pic] D) [pic] E) [pic] Answer: B 3) Which of the following represent
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ion is an atom or a molecule with a positive or a negative charge due to the loss or gain of one or more electrons. Ionic solids are salts (such as NaCl) that are held together by a strong force of attraction between ions of opposite charge. Molecules are the smallest physical units of an element or a (chemical) compound. Ionic solids are also known as salts because salts are ionic compounds that are formed from a reaction between an acid and a base. Hydrates are inorganic salts which contain
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The Physical Properties of Eleven Chemical Compounds Problem: Discover whether various chemical compounds are molecular or ionic and if they are acidic or basic. Hypothesis: If the compound is ionic‚ then it will be soluble because the energy given off water molecules compensates for the energy needed to break ionic bonds‚ also‚ if the compound is Ionic‚ it will be an electrolyte‚ because they mostly break up into ions when in water. If the compound is molecular‚ then it will be soluble‚ it cannot
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exactly how prevalent classical architecture really is. Elements of classical architecture can be found on almost every building in the old residential neighborhoods and many commercial buildings feature columns and arches as well. I saw all three orders of columns‚ arches‚ and even a dome. The only architectural element I was unable to find was a groin vault. The Massachusetts State House‚ about half a block from my apartment‚ has many examples of classical architecture including a large gold dome
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22 Final temp 28 40 35 Change in temp 6 17 13 Caloric content (Cal/g) 1.2 2.8 2.4 Ionic Reactions Introduction: I will learn about ionic reactions and how to balance equations. Materials and Methods: I mixed various precipitates to see if the solubility rules apply or if there were exceptions. Results: See table below Discussion: I formed an idea of different ionic reactions and how they can differ. Questions: B. Yes C. Carbonates‚ Phosphates‚ sulfides‚ oxides
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Pre-Lab Work Sheet Which type of compound usually has higher melting points: ionic compounds or covalent compounds? What is the reason for this difference in melting points? (3 points) Ionic compounds have higher melting and boiling points than covalent compounds. The electrostatic attraction in an ionic bond is very strong hence a lot of heat energy is required to break it down‚ ionic bonds have high melting and boiling points. In covalent bonds‚ the intermolecular forces are very weak and
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