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Chemistry 2-4

Chemistry 2-4. Elements and Compounds. I. Elements and Compounds . A. Early History… B . Element 1. Def – simplest form of matter; all atoms are the same 2. Building block for all substances 3. Examples – C = carbon, Mg = magnesium a. Latin background for some

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Chemistry 2-4

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  1. Chemistry 2-4 Elements and Compounds

  2. I. Elements and Compounds A. Early History… B. Element 1. Def – simplest form of matter; all atoms are the same 2. Building block for all substances 3. Examples – C = carbon, Mg = magnesium a. Latin background for some Na = sodium (naturium) Fe = iron (ferrum) 4. 110+ elements

  3. C. Compound 1. Def – two or more atoms of different elements that are chemically combined. Carbon Monoxide  CO 2. Breaking down… a. Most common forms = heating and electricity

  4. II. Examples of breaking down A. Water  Compound / Element? B. Ink  Compound / Element? C. Sugar  Compound / Element Water Hydrolysis Paper Chromatography Test Sugar Dehydration

  5. Practice Problems… 1. What elements make up the following chemical formulas? a. C8H9O2N b. C6H12O6 c. HgSO4 d. CuCl2 2. How many atoms of each element are found compound?

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