'Mg no3' diaporamas de présentation

Writing Ionic Formulas

Writing Ionic Formulas. Chemical Formulas from Names & Names from Chemical Formulas. Basic Principles. Formulas show smallest whole-number ratio of ions (posititve and negative) in the substance.

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KS3 Chemistry

KS3 Chemistry. 9E Metals and Metal Compounds . Contents. 9E Metals and Metal Compounds. Metals and non-metals. Metals and acids. Metal compounds and acids. Symbol equations. Summary activities. Metal or non-metal?. magnesium (Mg). phosphorus (P). sulfur (S). H. He.

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Did you get a reaction?

Did you get a reaction?. You know that a reaction took place if:. ___________________:. Did you get a reaction?. You know that a reaction took place if:. _________________________________________:. Did you get a reaction?. You know that a reaction took place if:.

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Moles and Stoichiometry

Moles and Stoichiometry. Regent Review. Correct Answer 0.5 moles. Correct Answer is 6. Correct Answer is (3) C 4 H 8. Correct Answer is (2) 1:2. (4) 310 g/mol is the correct answer. Moles = grams/ molar mass 20 grams/ 85 (g/mol) = .235 moles.

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Agenda: 4/21

Homework: Complete practice problems. Agenda: 4/21. Objective: To determine quantities needed for chemical reactions in research or manufacturing: Stochiometry Review: Set up of Stoichiometry Problems Graphic Organizer for Stoichiometry Class Practice: Mixed Problems

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Balancing Equations ANSWER KEY

Balancing Equations ANSWER KEY. __2__ Na +____ I 2 ? __2__ NaI. ___2_ KClO 3 ? __2__ KCl + __3__ O 2. ____ K 3 PO 4 + ___3_ HCl ? __3__ KCl + ____ H 3 PO 4. ____ C 3 H 8 + __5__ O 2 ? ___3_ CO 2 +__4__ H 2 O. __2__ N 2 +____ O 2 ? __2__ N 2 O.

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ACIDS AND BASES

ACIDS AND BASES. www.lab-initio.com. Properties of Acids. Acids are proton (hydrogen ion, H + ) donors Acids have a pH lower than 7 Acids taste sour Acids effect indicators Blue litmus turns red Methyl orange turns red Acids react with active metals, producing H 2

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Single replacement - one element replaces another in a compound happens in one of 2 ways

Types of Reactions synthesis - formation of a new substance by combining 2 or more original substances A + B ---> C Ex: 2 H 2 + O 2 ---> 2 H 2 O. Decomposition - the breaking down of a substance into two or more new substances C ---> A + B Ex. 2 KClO 3 ---> 2 KCl + O 2.

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Chemistry I Final Review

Chemistry I Final Review. Write the name of each of the following compounds in the space provided on your answer sheet. (2 points each) Ca 3 PO 4 SF 6 CuCl N 2 O 5. Chemistry I Final Review.

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REDOX

REDOX. Definition. If oxidation occurs, then reduction must also occur Any chemical process in which elements undergo a change in oxidation number is a Redox reaction. Example. 2Na + Cl 2 ? 2Na + + 2Cl - This reaction can be thought of as two half reactions

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Chemical Reactions

Chemical Reactions. By Kelsey T. Synthesis. Aluminum combines with Oxygen to form Aluminum Oxide Al + O 2 ?. Synthesis. Aluminum combines with Oxygen to form Aluminum Oxide 4Al + 3O 2 ? 2Al 2 O 3 Synthesis is A + B = AB. Single Replacement.

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Composition & Mass of Molecules and Compounds

Composition & Mass of Molecules and Compounds. Composition & Mass of Molecules and Compounds. Determining the Number of Atoms in a Formula:.

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Percent Yield

Percent Yield. Theoretical Yield. The maximum amount of product that can be produced from a given amount of reactant Theoretical yield is calculated using stoichiometry. Actual Yield. The amount of product actually produced when the chemical reaction is carried out in an experiment.

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Moles and Mole Ratio Stations

Moles and Mole Ratio Stations. Station 1:. Balance the following: __ NaN 3 ? __Na + __ N 2 2. Identify the type of reaction: 3. Write all possible mole ratios:. Station 2:. Balance the following: __ Cu + __ S ?__Cu 2 S 2. Identify the type of reaction:

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Chapter 10 Acids and Bases

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Polyatomic Ions

Polyatomic Ions. Polyatomic ions are a group of covalently bonded atoms with an overall charge and a specified chemical formula. The name and charge of the ion refers to the entire group. The chemical formula of the polyatomic ion is treated as a unit in any overall

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Starter w.c. 31.10.11

Starter w.c. 31.10.11. In the following redox reactions use oxidation numbers to explain what has been oxidised and what has been reduced: N 2 + 3H 2 ? 2NH 3 3Mg + 2Fe(NO 3 ) 3 ? 3Mg(NO 3 ) 2 + 2Fe MnO 2 + 4HCl ? MnCl 2 + Cl 2 + 2H 2 O. Answers

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