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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THE CHEMICAL EARTH: 1. The living and nonliving components of the Earth contain mixtures ● Construct word and balanced formulae equations of chemical reactions as they are encountered Reactants → products Chemical reaction: the way atoms are joined changes‚ atoms are not created nor destroyed‚ but are rearranged Indicators: emission of light or heat‚ odour formation of a gas formation of a precipitate colour change change in state aqueous = dissolved in water‚ an aqueous solution
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The Chemical Basis of Life Chapter Objectives Opening Essay Explain why an understanding of chemistry and the properties of water are important aspects of biology. Elements‚ Atoms‚ and Compounds 2.1 Define matter‚ an element‚ a compound‚ and a trace element. 2.2 Explain how and why iodine‚ fluoride‚ and iron are added to the human diet. 2.3 Distinguish between the size‚ location‚ and properties of protons‚ electrons‚ and neutrons. 2.3 Define the atomic number and mass number of an atom
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inches in diameter and 0.061 inches thick. If the cylindrical glass jar containing the pennies has a diameter of 6 inches and a height of 11.5 inches‚ how many pennies can fit inside the jar? You must show all work to receive credit. So first I want to fine what the volume of the jar is so I am going to use or Cubed inches Now we know how much space we have inside the jar. Now we have to find the volume of the pennies. Now you will divide 325 by .33 and we find that there is a total
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8.2 Chemical Earth 8.2.1 The living and non-living components of the Earth contain mixtures * Construct word and balanced formulae equations of chemical reactions as they are encountered Combustion reaction (burning) element + oxygen → oxide e.g. 4Na (S) + O2 (g) → Na2O (s) Reaction with hydrogen element + hydrogen → hydride e.g. Ca (s) + H2 (g) → CaH2 (s) Reaction between an oxide and water metallic oxide + water → hydroxide * metallic oxide is also known as “basic oxide” e.g
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Chemical Prperties of Metals Most metals are chemically reactive‚ reacting with oxygen in the air to form oxides over changing timescales (for example iron rusts over years and potassium burns in seconds). The alkali metals react quickest followed by the alkaline earth metals‚ found in the leftmost two groups of the periodic table. Examples: 4Na + O2 → 2Na2O (sodium oxide) 2Ca + O2 → 2CaO (calcium oxide) 4Al + 3O2 → 2Al2O3 (aluminium oxide) The transition metals take much longer to
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What Make Me Unique Honduras a country filled with beauty. Friendly people who stretch out their hands and welcome with hugs and smiles. Enormous mountains and rivers that seems to embrace Honduras. Laughter‚ music‚ and confidence is the sensation that Honduras produce every time that I remember it. But it is not just a simple country is the country that marked my childhood with beautiful memories. However‚ it is not only Honduras‚ but also the language‚ music and my family have made me the person
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consists of a layer of graphite 50‚000 times thinner than a human hair with unique electronic properties. Graphene’s properties are remarkable. Impermeable to gas‚ strongest two dimensional material ever tested‚ with a tensile strength 200 times as great as that of steel‚ conducts heat better than any metal. Graphene’s has unusual electrical characteristics‚ esp. its ability to carry charge carriers at speeds dwarfing those possible in silicon that allow superfast switching in data processing They
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Alex Brown Dr. Sobatka POP 1 Section 3 31 August 2013 What Makes Me‚ Me A little over twenty years ago‚ my grandparents decided to move out to a little town called Huntsburg. They bought twenty-eight acres of field that had a farm house on the far end off of a dirt street called Stillwell Road and thus the “Martin Complex” was born. They have four boys‚ my dad and his three brothers‚ who all currently have houses on the property. My house consists of my parents‚ Bill and Lisa‚ my sisters‚ Katie
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carbohydrates‚ fats Lithosphere: earth’s crust which contain many types of minerals (mixture sedimented with sand‚ soil & rock) most abundant compound/mineral is quartz Hydrosphere: ‘hydro’ so water is most abundant compound this leads to oxygen & hydrogen being most abundant elements. E.g. sea water (mixture) contains many dissolved minerals such as salts Atmosphere: layer above earth’s surface which contains mixture of gases. E.g. nitrogen (75.3%) & oxygen (23.1%) being most abundant gases
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