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Distinguishing Elements and Compounds

Distinguishing Elements and Compounds. Elements Compounds Key Differences Breaking down compounds Properties of Compounds Both are Substances. Substances and Mixtures. Substances . Mixtures. Definite composition Can be separated chemically Elements and compounds. Variable composition

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Distinguishing Elements and Compounds

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  1. Distinguishing Elements and Compounds • Elements • Compounds • Key Differences • Breaking down compounds • Properties of Compounds • Both are Substances

  2. Substances and Mixtures Substances Mixtures • Definite composition • Can be separated chemically • Elements and compounds • Variable composition • Can be separated Physically • Homogeneous • Heterogeneous

  3. Symbols and Formulas • Used to represent elements and compounds • Chemical Short Hand • Chemical symbols • 1st letter is always capitalized • 2nd letter is never capitalized • Chemical Formulas • Small whole number ratio of elements present • H2O

  4. Section 2.3 Review • How are compounds different from elements? • How can you distinguish a substance from a mixture? • What are chemical symbols and formulas used for? • Name methods used to break down compounds into simpler substances.

  5. Sec 2.3 review cont. • ID each of the following as an element, compound, or mixture. • Table sugar • Cough syrup • Tap water • Nitrogen • Air • Carbon dioxide

  6. Compound Analysis Acetaminophen C8H9O2N Name the elements and their ratio in this compound

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