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Warm Up

Warm Up. What is the formula for calcium chloride? How many bonds does carbon form? What determines the ratio elements combine in?. Take 1. +. . Remember This?. Because atoms never just disappear! Conservation of matter H 2 + Cl 2  HCl What’s wrong with this picture?.

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Warm Up

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  1. Warm Up What is the formula for calcium chloride? How many bonds does carbon form? What determines the ratio elements combine in?

  2. Take 1

  3. +  Remember This? • Because atoms never just disappear! • Conservation of matter • H2 + Cl2 HCl • What’s wrong with this picture?

  4. Matter is Conserved! Key Point 1: In any normal chemical reaction, matter is neither created nor destroyed

  5. Matter is Conserved! Key Point 2: Mass can be measured

  6. Matter is Conserved! If mass is never created/destroyed, and it can be measured, then: Key Point 3: Total mass of products = Total mass of reactants

  7. + Law of Conservation of Mass 1. What is matter? START HERE! 2. What is mass? What are 3 examples of things that have a mass? 7. Is mass conserved in this reaction? Explain why or why not. 3. What does it mean for something to be “conserved”? 6. What does not happen to the atoms in matter during a chemical reaction? 4. Fill in the blank: During a chemical reaction, matter is not _____________ or _____________. 5. What happens to the atoms in matter during a chemical reaction?

  8. Now Let’s Apply: A student takes 30g of BaCl2 and reacts it with 25 g of LiOH. BaCl2 + LiOH  LiCl + Ba(OH)2 What is the total mass of the products formed?

  9. Now Let’s Apply: A student takes 30g of BaCl2 and reacts it with 25 g of LiOH. BaCl2 + LiOH  LiCl + Ba(OH)2 What is the total mass of the products formed? 55g.

  10. Practice, Practice, Practice • 45g of K3PO4 are combined with 25g of NaOH. What is the total mass of products? 35g of MgSO4 are combined with 30g of KCl What is the total mass of products?

  11. Practice, Practice, Practice • 45g of K3PO4 are combined with 25g of NaOH. What is the total mass of products? 80g 35g of MgSO4 are combined with 30g of KCl What is the total mass of products?

  12. Practice, Practice, Practice • 45g of K3PO4 are combined with 25g of NaOH. What is the total mass of products? 80g 35g of MgSO4 are combined with 30g of KCl What is the total mass of products? 75g

  13. Practice, Practice, Practice • 70g of BaCl combines with 50g of NaOH What is the total mass of products? 253.4g of NaOH combines with 123.4g of LiCl What is the total mass of products?

  14. Practice, Practice, Practice • 70g of BaCl combines with 50g of NaOH What is the total mass of products? 120g 253.4g of NaOH combines with 123.4g of LiCl What is the total mass of products?

  15. Practice, Practice, Practice • 70g of BaCl combines with 50g of NaOH What is the total mass of products? 120g 253.4g of NaOH combines with 123.4g of LiCl What is the total mass of products? 376.8g

  16. Practice, Practice, Practice • 70g of BaCl combines with 50g of NaOH and forms 60 g of BaOH. • What is the mass of the NaCl that forms? 250g of NaOH combines with 125g of LiCl and forms 100 g of NaCl. What is the mass of the LiOH that forms?

  17. Practice, Practice, Practice • 70g of BaCl combines with 50g of NaOH and forms 60 g of BaOH. • What is the mass of the NaCl that forms? 60g 250g of NaOH combines with 150g of LiCl and forms 100 g of NaCl. What is the mass of the LiOH that forms? 300g

  18. Practice time!!!

  19. Lab time!!!!

  20. Remastery quiz • Work silently and alone for full credit

  21. Sum Up • Top ten: how’d we do? • What did we learn today?

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