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CHAPTER 1: MATTER AND CHANGE

CHAPTER 1: MATTER AND CHANGE. Chemistry. Notes Pages 3-4. Matter and its properties. States of Matter. Solid, liquid, gas ( They Might Be Giants – Solid Liquid Gas ) Change of state:. Properties of matter. Property – an attribute or quality of a substance; used to describe a substance.

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CHAPTER 1: MATTER AND CHANGE

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  1. CHAPTER 1:MATTER AND CHANGE Chemistry

  2. Notes Pages 3-4 Matter and its properties

  3. States of Matter • Solid, liquid, gas (They Might Be Giants – Solid Liquid Gas) • Change of state:

  4. Properties of matter Property – an attribute or quality of a substance; used to describe a substance • Chemical Property • Relates to substance’s ability to undergo changes to become different substances • Describes how a substance changes identity • Examples: • Ability to burn • Ability to rust • Does not react with…x • Reacts with…x • Physical Property • Observed or measured without changing identity of a substance • Describes substance itself (NOT how it changes) • Examples: • Color • Boiling point • Melting point • Conductivity • Density

  5. Properties of matter (review) Physical Chemical Relates to ability of a substance to undergo change to become a new substance – its ability to react • Can be observed or measured without changing identity volume conductivity mass ability to react color melting point density

  6. Types of Change • Physical Change • A change in a substance that does NOT involve a change in identity • Substance keeps the same composition • Examples: • Ripping paper • Sanding wood • Making a hole • Shattering glass • Solid ↔liquid ↔ gas (Change of state) • Chemical Change (Reaction) • Change in a substance in which the chemical identity DOES change • One or more substances is converted into a new substance with a different composition • Chemical bonds broken and/or formed • Examples: • Burning paper • Baking soda/vinegar • Burning magnesium • 2Mg (s) + O2 (g)  2MgO (s) • Sodium carbonate + calcium chloride • Na2CO3 (aq) + CaCl2 (aq)  2NaCl (aq) + CaCO3 (s)

  7. Evidence of a chemical reaction (change) • Energy (light/heat) • Color change • Bubbles (formation of gas) • Formation of a precipitate (solid from solution)

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