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# Conservation of matter

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### Conservation of matter

1. 1. Law of conservation of mass: put it all together!
2. 2. How can you prove the law ofconservation of mass using a balanced chemical reaction??? H2 + O2  H2O
3. 3. Step one: Balance the reaction ___H2 + ___O2  ___H20
4. 4. Step 2: Determine the molar mass of each compound 2 H2 + O2  2 H2O
5. 5. Step 3: Add up the mass on each side of the arrow, they should be equal! 2 H2 + O2  2 H2O
6. 6. Prove the Law of conservation of mass with this reaction… Fe + H2O  Fe3O4 + H2Step 1: Balance the equationStep 2: Calculate the molar masses of eachreactant and each product.Step 3: Show mass on product side = mass onreactant side.
7. 7. 1) Al2O3  Al + O22) C2H6 + O2  CO2 + H2O3) Al + Br2  Al Br34) Li + H2O  LiOH + H25) C3H8 + O2  H2O + CO2EC) H2SO4 + Fe  Fe2(SO4)3 + H2 Remember to: 1-Balance equation. 2- find molar mass of all compounds. 3- Add up the masses for each side of the reaction.
8. 8. Na + H2O  NaOH + H21) Balance the equation.2) Calculate the molar mass for each compound in the reaction.3) Show the law of conservation of mass by showing the total of mass of the reactants is equal to the total mass of the products.
9. 9. Na + H2O  NaOH + H2
10. 10. NaCl + F2  NaF + Cl21) Balance the equation.2) Calculate the molar mass for each compound in the reaction.3) Show the law of conservation of mass by showing the total of mass of the reactants is equal to the total mass of the products.
11. 11. NaCl + F2  NaF + Cl2