CHAPTER 2 - MATTER - PowerPoint PPT Presentation

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CHAPTER 2 - MATTER

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  1. CHAPTER 2 - MATTER

  2. 2.1 The Particulate Nature of Matter • Chemistry is the study of matter • Matter has Mass & Volume • ALL Matter is composed of ATOMS

  3. 2.2 Elements and Compounds • Compounds – formed by 2 or more elements being bonded chemically Elements – composed of only one type of atom

  4. 2.3 States of Matter

  5. 2.4 Physical & Chemical Properties/Changes • Physical Property – describes measurable, physical attributes of the substance Ex. Density, odor, color, melting point, boiling point • Chemical Property – refers to the ability of substances to forms new substances Ex. Flammable, toxic, inert

  6. 2.4 Physical & Chemical Properties/Changes • Physical Change generally a phase change (substance will still have same chemical formula)

  7. 2.4 Physical & Chemical Properties/Changes Chemical Change bonds between atoms are broken and new bonds are firmed to create new substances with new chem/phys properties Indicators of a Chemical Change Color change Gas is produced Energy is released or absorbed Precipitate is formed

  8. 2.6 Separation of Mixtures • Distillation • Filtration • Chromatography