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Chapter 1
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Chapter 1

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Introduction to chemistry, physical/chemical changes, significant figures, precision/accuracy

Introduction to chemistry, physical/chemical changes, significant figures, precision/accuracy

Published in: Education
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  • 1. CHEMISTRY Chemistry is the science that deals with the specific properties, especially the composition and structure, of matter and its transformations. It isn't a chem-mystery! Chemistry is a physical science because it deals with "physical quantities" - things that can be expressed by a number followed by a unit.
  • 2. Properties of Matter Matter is anything that has mass & occupies a volume. We also describe matter by itsphysical and chemical properties.
  • 3. Physical Properties For a substance like gasoline its physical properties are: · odor · colour · density
  • 4. Chemical Properties For a substance like gasoline one of its chemical properties is: · flammability This is true because it involves interactions with other substances.
  • 5. Chemical Change (Reaction) When gasoline ignites, it reacts with oxygen to form new substances including carbon dioxide and water. This is an example of a chemical change or a chemical reaction.

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