'2 atoms' diaporamas de présentation

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Unit #5

Unit #5. Polyatomic Ions / Mole / Molarity / Electrochemistry. This unit builds upon previous topics:. Electron Configuration Orbital Notation Electron Dot Notation Octet Rule. Remember:. Ion-.

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Atomic model

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Matter and Energy

Matter and Energy. Applied Chemistry. Matter and Energy. The universe is made of matter and energy . Energy Definition: The capacity to do work or produce heat . Common unit: calorie abbreviated cal SI unit: Joule abbreviated J. Types of Energy.

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Covalent Bonds & Molecular Forces

Covalent Bonds & Molecular Forces. Ch.6. (6-1) Covalent Bond. e - are shared b/w 2 atoms Single bond : 1 shared pair Double bond : 2 shared pairs Triple bond : 3 shared pairs http://facweb.eths.k12.il.us/weinerj/PPT_Presentations/covalent_bonding.ppt. Molecular Orbital.

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Light Scattering Spectroscopy

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Chemical Reactions

Chemical Reactions. I. CHEMICAL Reactions:. All the chemical reactions in our bodies are called metabolism . Breakdown and reassemble molecules in the body. Chemical bonds are broken and formed during chemical reactions. II. Writing a Chemical Equation:. YIELDS. REACTANTS. PRODUCTS.

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Kinetic

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Matter, Atoms, Elements, Compounds

Matter, Atoms, Elements, Compounds. Ms. Wang Lawndale High School. Matter. All of the materials around you are made up of matter. You are made up of matter, as are the chair you sit on and the air you breathe. 1. Give an example of solid matter. 2. Give an example of liquid matter.

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Molecular Formulas

Molecular Formulas. A molecule is a neutral group of atoms united by covalent bonds. A substance that is made of molecules is called a molecular substance . To describe the composition of a molecular compound , chemists often use a molecular

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Chapter 6

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Chemical Symbols and Formulas

Chemical Symbols and Formulas. Chapter 2.7. Chemical Symbols. All elements in the Periodic Table have symbols that are recognized world wide . It does not matter which country you are in or the language you speak.

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Question of the Day

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TYPES OF FORMULA

TYPES OF FORMULA. EMPIRICAL FORMULA. - lowest whole number ratio of the elements in a compound STEPS 1. Given the % composition, change the percent to grams. 2. Change the grams to moles using the formula n = GW MM 3. Calculate the lowest whole number ratio of the moles.

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Mole Calculations Part Three

Mole Calculations Part Three. Calculate the number of O atoms in 250. g of CO 2. 250. g CO 2. x 1 mole. x 6.02 x 10 23 molec. x 2 atoms O. = 6.84 x10 24 atoms O. 44.0 g. 1 mole. 1 molec CO 2. C. O. O. Note, there are 2 O's for each CO 2 molecule.

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Intro to Reactions

Chemical Reactions. Intro to Reactions. A.Signs of a Chemical Reaction. Evolution of heat and light Formation of a gas Formation of a precipitate Color change http://www.youtube.com/watch?v=fF6FUVxAVzI. B.Law of Conservation of Mass.

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Bonding

Bonding. Basics. Ionic. Need to know Valence electrons Octet rule Cations Anions Ionic compounds Obviously, you need both a cation and an anion to create one of these…remember, net charge = 0. Ionic compounds.

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Chemistry Warm Up: Mole / Mass / Particles

Chemistry Warm Up: Mole / Mass / Particles. What is the mass of one mole of water? If one milliliter of water has a mass of 1.00grams, how many moles are there in one milliliter of water? Based on your answer to question 2, how many molecules are there in one milliliter of water.

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IONIC BONDS

IONIC BONDS. Only certain ratios (combinations) of elements result in the formation of ionic compounds. For ex: Lithium (Li) will react with Fluorine (F) to form LiF. BUT, it will NOT form LiF 2 , LiF 3 , etc.

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