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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 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 Na = sodium (naturium) Fe = iron (ferrum) 4. 110+ elements
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
II. Examples of breaking down A. Water Compound / Element? B. Ink Compound / Element? C. Sugar Compound / Element Water Hydrolysis Paper Chromatography Test Sugar Dehydration
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?