'Chemical formulas' diaporamas de présentation

1. What are the structural differences between ionic and molecular compounds?

1. What are the structural differences between ionic and molecular compounds?. 2. How do those differences affect their chemical formulas?. The chemical formula for a covalent compound is called a molecular formula ;. The chemical formula for an ionic compound is called a formula unit.

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Mixtures, elements, compounds

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Classification of Matter

Classification of Matter. Four classes of matter. The four classes of matter are elements, compounds, mixtures, and solutions. Homogeneous matter. Appears to look similar throughout Ex: salt, sugar, whipped cream all parts are alike (appearance). Question.

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It Was Here Just a Moment Ago!

It Was Here Just a Moment Ago!. TAKS Objective 3. Substances have chemical and physical properties. TEKS Science Concepts 8.9. The student knows that substances have chemical and physical properties. The student is expected to:

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Warm-up 3/21/11

Warm-up 3/21/11. Review questions: List as many elements as you can think of. Then list as many compounds as you can think of.

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Cloze Reading

Warm-Up : W hat is weird about water? Watch video clip and complete the first column in the 3-column worksheet. Cloze Reading. Read Aloud: Textbook: Molecules at an Exhibition page 169- 170. By Emsley J. (1998)

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The Chemistry of Life

The Chemistry of Life. Chapter 6. Basics of Chemistry. The cell is a complex chemical factory . It is made of atoms , elements , compounds , and molecules . Do Now!. Answer questions 1-2 on page 85 in UPCO. The Atom. Living and non-living things are made up of atoms.

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Chapter 7- part II Ionic Compounds and Naming of Ionic compounds Resources: Class powerpoint presentation

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Writing Chemical Formulas

Writing Chemical Formulas. Chemical Formulas represent compounds. Oxidation Numbers are used to determine the ratio in which elements combine to form compounds. Understanding Chemical Formulas. Chemical formulas are composed of a positive half and a negative half.

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Review Quiz and Introduction to Acids/Bases/pH Scale

Acids and Bases and pH. Review Quiz and Introduction to Acids/Bases/pH Scale. Review. 1. What is an ion? 1. An ion is an atom that has lost or gained an electron 2. What is a chemical reaction? Click Here to See a Chemical Reaction

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Describing Chemical Reactions

Describing Chemical Reactions. http://www.youtube.com/watch?v=F54rqDh2mWA. Writing Chemical Equations. used to convey as much info. as possible about what happens in a chemical reaction. Word Equations write out what chemicals are reacting hydrogen peroxide ? water + oxygen

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WELCOME Mrs. mccallum

WELCOME Mrs. mccallum. Wish list 1 st Period: Kleenex 2 nd Period: Paper Towels 4 th Period: Sandwich Baggies 5 th Period: Gallon-Size Baggies 7 th Period: Hand Sanitizer 8 th Period: Paper Towels. 8 th Grade Science & IPC. Please grab a BLUE handout

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Chemistry (January 13-March 10)

Chemistry (January 13-March 10). TEKS: (6.5) Matter and energy. The students knows the differences between elements and compounds know that an element is a pure substance represented by chemical symbols

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Unit 1: Introduction to matter Lecture 3: elements vs. compounds

Unit 1: Introduction to matter Lecture 3: elements vs. compounds. What are pure substances made of ?.

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Electron Configurations

Electron Configurations. Objectives: 3.0 Use the periodic table to identify periodic trends, including atomic radii, ionization energy, electronegativity, and energy levels. 3.1 Utilizing electron configurations, Lewis dot structures, and orbital notations to write chemical formulas.

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Periodicity

Periodicity. When one looks at the chemical properties of elements, one notices a repeating pattern of reactivities. Periodic Table. The rows on the periodic chart are periods. Columns are groups. Elements in the same group have similar chemical properties. Groups.

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CHAPTER 9 CHEMICAL REACTIONS AND EQUATIONS

CHAPTER 9 CHEMICAL REACTIONS AND EQUATIONS. Law of conservation of Matter. Mass is conserved in chemical reactions Mass of products = mass of reactants 2H 2 + O 2 ? 2H 2 O 4 amu + 32 amu = 2 (18 amu). The atoms of each element are also conserved.

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Happy Lesson on Chemical Reactions

Happy Lesson on Chemical Reactions. 8 th Grade. Forming New Substances. Chemical reactions form new substances with different properties than the starting substances. Clues that a chemical reaction is taking place include formation of gas or solid, a color change, and energy change.

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9/26/11

65. Writing Formulas Practice . 66. Writing Formula Practice. . 9/26/11. 10/17/2013. 10/17/2013. A pplication/Connection : Ws : Writing Chemical Formulas Exit : What is the formula for photosynthesis?. . Starter: What is the formula for these molecules? . . Practice: Define :

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Chemical Formulas and Chemical Compounds

Chemical Formulas and Chemical Compounds. Determining Chemical Formulas. Compare and Contrast. formaldehyde. Lactic Acid. Acetic Acid. Empirical Formulas. C 6 H 12 O 6 What is the formula if the simplest ratio of atoms were used? CH 2 O. Empirical and Molecular Formulas.

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