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Chapter 2 Section 4

Chapter 2 Section 4. c hemical p roperty - the quality of a substance to undergo chemical reactions and to form new substances -words describing are burn, rust, rot -indicators are color change, heat absorbed or released, gas produced, odor change

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Chapter 2 Section 4

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  1. Chapter 2 Section 4 chemical property- the quality of a substance to undergo chemical reactions and to form new substances -words describing are burn, rust, rot -indicators are color change, heat absorbed or released, gas produced, odor change chemical reaction- a process where one or more substances are changed into new substances

  2. ex- hydrogen + oxygen →water 2H2 + O2→ 2H2O reactantsproducts starting substance(s) substance(s) formed → reads as yields, gives you, produces ex- alka-seltzer, fireworks, leaves changing -all are irreversible

  3. Law of Conservation of Mass -mass is neither created nor destroyed *mass of reactants = mass of products ex- 2H2 + O2→ 2H2O 3.7grams of hydrogen react with 42.8 grams of oxygen. How much water is produced? 3.7g +42.8g = 46.5g -since mass of react. = mass of prod. then there are 46.5g of water produced

  4. 2NH4NO3 → 2N2+ 3O2 + 4H2O 40g 14g8g ? 40g = (14g + 8g) + x 40g-22g = x x = 18g

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