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Chemical elements

lab3

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49 The Redox Arena Redox is a compressed way of writing reduction and oxidation. Reduction refers to an atom gaining electrons and oxidation involves an atom losing electrons. Together, this process is very telling, in that it points to a very important aspect of chemical change: the electrons. For a reaction to occur, new bonds must form between atoms. lt is the ability of electrons to be shared or transferred between atoms that cause new bonds to form. The electron, more so than the proton or neutron, is the active player in the arena of chemical change. 'u! pupr{ ol ^Jeuruns lo ^docolorld aIBU\l 'z pue I sued rol sernpecold ruEroElo ,(oll Jo ezuEluuns g lool peau lqel lsrll rno^ u! g-[ slool ,ura!^au ls!llcor.lc qe'I-ard v n n tr AJls!uaqc ouolsrauroc :sllPloo aqf

lab1

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15 Southside Seaweed Seaport Chemists are often depicted in movies or in books as eccentric and absent-minded p:ofessors. ln reality chemists are very in touch with the needs of society and are more practical tnan you nay think. Chemists often isolate substances found in nature or create new substances that benefil our heai:h. This activity is a case in point. You will be isolating an iodide salt that will be used to prepare a tinctlrre of lodine. Sold as an over-the-counter drug in your local pharmacy, iqQlne is used as an antiseptic on cL(s and scrapes of the skin. lodine has also been used to sanitize swimming pools and medical instruments pur,fy drinking water and is used in the treatment of goiter (swelling of the thyroid). I hope that this acti\.i}, r,rill convince many of

2.2 Western High Biology H vocab

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?Opposite charges of polar molecules can interact to form hydrogen bonds. ?Often oxygen or nitrogen, but many other molecules. ?Weaker than covalent bonds but strong among water molecules 2.2 Vocabulary Isabella Hardman Period 7 9/2/14 ?Measures acidity ? U sually between 0 and 14 ? - 0 is very acidic (High H+) and 14 is in very basic (low H+) ?pH of 7 is neutral -Must be tightly controlled in organisms with buffers.-
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Chemistry of Life

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Chapter 6 The Chemistry of Life Atoms and Their Interactions Elements Carbon, hydrogen, oxygen, and nitrogen make up more than 96% of the mass of a human body. Atoms All nuclei contain: positively charged particles called protons (p+) particles with no charge called neutrons (n0). Electron cloud The region of space surrounding the nucleus contains extremely small, negatively charged particles called electrons (e-) This region of space is referred to as an electron cloud. Energy levels The first energy level can hold only two electrons. The second level can hold a maximum of eight electrons. The third level can hold up to 18 electrons. How many electrons are in fluorine?s 2nd energy level? How many protons are in an atom of fluorine? Isotopes

intro to biochemistry and water worksheet

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1 Name: _____________________________ Date: ______________________________ 1. Because oxygen atoms tend to attract positively charged atoms, organic compounds that contain oxygen atoms tend to form ________________ bonds. 2. In the molecule that has the chemical formula C2H4, the carbon atoms are bonded together with a _________________________ bond. 3. What are the three types of bonds? _________________, ______________________, ___________________ 4. A substance that tends not to react with water, "Water hating" , is ________________________ 5. Breaking of _______________ bonds is the first thing that happens when water is heated, which means that it takes a

AP BIO

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Chapters 1, 2, &3. AP Biology Summarize Themes connect the concepts of biology Evolution is the core thing Accounts for the unity and diversity of life Charles Darwin and Theory of natural selection Taxonomy > classification of organisms Domains: Bacteria, Archaea, and Eukarya 6 Kingdoms: Plant, Animal, Fungi, Protista, Bacteria, Archaebacteria New properties emerge at each level in the biological hierarchy O>P>C>E>B Atom > Molecule > Organelle > Cell > Tissue > Organ > Organ System > O Organisms interact with their environments, exchanging matter and energy Energy > Producers > Consumers Structure and Function are correlated at all levels of biological organization Form Suits function Cells are an organism?s basic units of function Prokaryotes vs. Eukaryotes

Campbell Biology 9th Edition Chapters1-5 Study Guide

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Chapter 1 Biology is the scientific study of life Properties of life: order, evolutionary adaptation, response to the environment, regulation, energy processing, growth and development, reproduction Ecosystem Dynamics Producers Plants and other organisms that convert sunlight into chemical energy Consumers Organisms that utilize (feed) on producers or other consumers 2 Basic Cell Types Eukaryotic Large High degree of organelle organization Membrane bound genetic material (nucleus) Prokaryotic Small Little organelle organization No membrane bound genetic material Genetic Material Both prokaryotic and eukaryotic cells maintain heritable material (DNA)a DNA is made of strands of nucleotides which form genes (sequences of your DNA) Make us who we are

Bob Jones PPT Notes -- Chapter 8b

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Nomenclature What?s In a Name? Common names describe some aspect of the compound Examples: soda ash Epsom salts What?s In a Name? IUPAC system International Union of Pure & Applied Chemistry Common Name Chemical Name Formula Common Names of Some Industrial Chemicals oil of vitriol sulfuric acid H2SO4 caustic lime calcium hydroxide Ca(OH)2 lye sodium hydroxide NaOH Common Name Chemical Name Formula Common Names of Some Industrial Chemicals soda ash sodium carbonate Na2CO3 milk of magnesia magnesium hydroxide Mg(OH)2 IUPAC System Developed in the late 1800s Requires determining the type of compound before naming it Has a different set of naming rules for each type of compound Flow Chart Green: questions what type of bond Blue: gives naming information

Cycles Notes

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Trini Soza Mr. Miguelez APES, 5 10 December 2013 Cycles Questions Water It basically is what keeps an organism alive. The Hydrologic Cycle keeps the water movement going on, above and bellow the surface. There would be more groundwater since the tree roots are not there to absorb the rainfall, as well with a decrease in water evaporation. Logging takes a hit at the Hydrologic Cycle since trees play a crucial role in it. Not only does the fact that we cut down trees affect the cycle, but also one of the biggest effects we have is contamination. The contamination of oceans, rivers, lakes are damaging the quality of the water in the cycle. Carbon Dioxide - Respiration from animals - Organisms - Dissolved CO2 from ocean - Combustion of fossil fuels - Erosion - Volcanic reactions

Chemistry The central science Chapter

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Periodic Table Period 1 I A 18 VIII A 1 1s 1 ?1 atomic # ? 29 +2,1 ? ions commonly formed 2 0 H 2 II A atomic symbol ? Cu 13 III A 14 IV A 15 V A 16 VI A 17 VII A He hydrogen English element name ? copper helium 1.008 63.55 ? atomic mass (rounded) 4.003 2 2s 3 +1 4 +2 2p 5 +3 6 ?4 7 ?3 8 ?2 9 ?1 10 0 Li Be B C N O F Ne

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