'Whole number ratios' diaporamas de présentation

Atoms and Elements Chapter 4

Atoms and Elements Chapter 4. Tro, 2 nd ed. ELEMENTS AND ATOMS. All known substances on Earth and probably the universe are formed by combinations of more than 100 elements.

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Atomic Theories- Part I

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Chapter 4

Chapter 4. Atoms and their structure. History of the atom. Not the history of atom, but the idea of the atom. Original idea Ancient Greece (400 B.C.) Democritus and Leucippus- Greek philosophers. History of Atom. Smallest possible piece? Atomos - not to be cut. Looked at beach

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Regents Chemistry

Regents Chemistry. Tyna L. Meeks. 1. Introduction. This course will be following these guidelines: Organized by related techniques, called a spiral curriculum 15 Unit exams

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Regents Chemistry

Regents Chemistry. Tyna L. Meeks. 1. Introduction. This course will be following these guidelines: Organized by related techniques, called a spiral curriculum 15 Unit exams

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Review from Thursday:

Review from Thursday:. What is a mole?. Chemical Quantities. Chemical Quantities. Chemical formulas give essential information about the exact ratio of atoms that form a substance. Ex. CO 2 - carbon dioxide contains a 1:2 ratio of carbon to oxygen atoms.

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CHEMICAL REACTIONS

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Atomic Structure

Atomic Structure. Mass Number. Actual masses of atoms are frustrating to work with.Therefore we use relative comparisons of the masses of atoms. We use the atomic mass unit (amu) which is one-twelfth the mass of a carbon atom that contains six protons and six neutrons.

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Ancient Greece

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Molar Mass and Formulas

Molar Mass and Formulas. Chapter 3 (sections 3.1-3.5). What is a mole?. A mole is used to represent the quantity 6.02 x 10 23 . It can be used to represent that amount of ANYTHING: -atoms -molecules -ions -compounds -particles -items (ex: students, homework assignments).

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To Understand The Atom Is To Understand Chemistry: Mileposts on the road to the atom

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Early Early Atomic ideas

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History of the atom

History of the atom. Atoms (created by the Big Bang) are the smallest unit that makes up matter . Atoms. All life, whether in the form of trees, whales, mushrooms, bacteria or amoebas , consists

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CHEMICAL REACTIONS

CHEMICAL REACTIONS. SAVE PAPER AND INK!!! When you print out the notes on PowerPoint, print "Handouts" instead of "Slides" in the print setup. Also, turn off the backgrounds (Tools>Options>Print>UNcheck "Background Printing")!.

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Dalton

Dalton. Thomson. Schrodinger. Bohr. Rutherford. John Dalton. John Dalton. All elements are composed of atoms Atoms are indivisible Atoms of a given element are identical Compounds are composed of a combination of elements. The combination of elements in a given compound are identical

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Law of Definite Composition and Law of Multiple Proportions

Law of Definite Composition and Law of Multiple Proportions. Chemistry Mrs. Coyle. Joseph Proust (France 1799). Law of Definite Proportions: A given compound always contains elements in a certain proportion by mass. (Constant composition).

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History of Atom Flip Book

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Chapter 5: Atomic Structure

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Chapter 2

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