MODULE 1: THE CHEMICAL EARTH 3.1.1: Elements in Earth are present mostly as compounds because of interactions at the atomic level * Identify that matter is made of particles that are continuously moving and interacting Matter: anything that has mass and occupies space. Exists in three different states: solid (s)‚ liquid (l) and gas (g) The Particle Theory: “All matter is made up of small‚ indivisible particles called atoms that are continuously moving” | Solid | Liquid | Gas | Particle
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of different types and strengths of intermolecular bonds to explain the following: There exists four types of intermolecular bonding‚ they include ionic‚ covalent‚ Van der waals and hydrogen bonding. In order to describe the existence of such bonding you must also understand the concepts of polarity‚ polar and non-polar‚ and electronegativity. Ionic bonds are created by the complete transfer of electrons from one atom to another. In this process of electron transfer‚ each atom becomes a ion that
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An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons‚ giving it a net positive or negative electrical charge. The name was given by physicist Michael Faraday for the substances that allow a current to pass ("go") between electrodes in a solution‚ when an electric field is applied. It is from Greek ιον‚ meaning "going." The word ion also is responsible for electrical current being symbolized by the letter i in chemistry and physics. An anion
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The Greek culture has had a huge impact on the history of the world. There is something Greek in almost everything‚ especially in the world’s architecture. Greece no longer had one king‚ so they focused on building temples for their gods. Architecture began small and plain but evolved into impressive pieces of art. As time passed from the Archaic period to the Hellenistic period‚ the people of Greece developed a type of formula for their buildings and their pieces of art. In Ancient Greece‚
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for elements and monatomic ions while writing Lewis structure for molecules and polyatomic ions. I will also be writing chemical equations using Lewis structures for different reactions involving either ionic compounds or covalent compounds. Lastly‚ I will I will predict the empirical formulas of ionic and covalent compounds
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Semester 1 Revision The list below will assist you to check your understanding of the main concepts studied in Semester One. Work carefully through the list below and make sure that you can do what the statement says. This is not a course summary. It is a checklist for you to use to identify areas where you need extra work and a guide for your study. Macroscopic properties of matter I can | | | Classification
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around the atoms and lines. c) Octet rule: It is referring to the principle that bonded atoms share their eight outer electrons. There rule of the octet is sometimes broken. d) Cations/Anions: It is an ionic species with a positive charge‚ example of Cation/Anions: Anion is an ionic species having a negative charge. e) Electronegativity: It is a property of an atom which increases with its tendency to attract the electron of a bond. f) Polar covalent bond: Polar covalent bonds act
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and melting point. Some substances came very close to passing all the tests‚ but only one substance was able to pass all of them. I recommend using sodium carbonate as your substance. Of all the substances‚ only two were covalent and two were ionic. The ionic substances‚ sodium chloride‚ sodium carbonate‚ and salicylic acid‚ came close to the description you requested. The covalent substances‚ sucrose and salicylic acid‚ did not match the descriptions. The best substance would definitely be sodium
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Egypt‚ this is very evident in their temples. Structure and decoration was a big part of Greek design. They had carved designs of the surrounding landscape evident in their buildings. Ancient Greek architecture was defined by the three orders‚ Doric‚ Ionic and Corinthian. The orders are columns of different heights and
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Aqueous Solutions Reactions‚ Metathesis (Double Replacement) Reactions and Net Ionic Equations Terrance Shelton Introduction India’s cultural treasure and biggest tourist attraction is slowly losing its magnificent appeal due to decades of acid rain. The walls of the Taj Muhal are composed of a marble-like substance ( CaCO3) that corrodes and eventually crumbles when reacted with acid rain(H2SO4). Not only is the Taj Muhal suffering‚ but also other historic landmarks across the world. This is
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