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Chapter 2

Chapter 2 . Atoms , Molecules, and Ions. History of the Atom. Democritus (400 BC). Proposed that matter was composed of tiny, invisible particles. Gr. atomos. Aristotle. Said that all substances are composed of four elements: Earth, Wind, Fire, and Water. John Dalton (1803 AD).

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Chapter 5 Nomenclature

Chapter 5 Nomenclature. Naming Starts with Classifying Compounds. Binary compounds: only 2 elements Compounds containing polyatomic ions Acids: formulas often start with H. Classifying Binary Compounds. Binary ionic compounds contain a metal and a nonmetal. Type I and II

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Ionic Compounds

Ionic Compounds. Ions. when electrons are added or removed from a neutral atom, it becomes an ion (has electric charge) Positive = less electrons than protons Negative = more electrons than protons the charge on the ion is shown to the upper right of the symbol, e.g. Al 3+ or O 2-. Ions.

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Warm-up: 10/21

Warm-up: 10/21. Using the reference sheet with the list of polyatomic ions- pg. 12, answer the following: 1. Write out the chemical formulas for: a. hydroxide c. sulfite b. phosphate d. sulfate 2. What is the charge for each of the above polyatomics ?.

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264 views • 9 slides

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Metal name - PowerPoint PPT Presentation

Chapter 2

Chapter 5 Nomenclature

Ionic Compounds

Warm-up: 10/21