1. Conservation of matter (mass)

2. We all know the basic LAW of CONSERVATION of MATTER….

3. NEW SUBSTANCES are REFORMED from the SAME OLD ATOMS!
2 H2O  2 H2 + O2

4. NEW SUBSTANCES are REFORMED from the SAME OLD ATOMS!
2 H2O  2 H2 + O2
the LAW of
CONSERVATION
of MATTER

5. In a chemical reaction matter is neither created NOR destroyed.

6. In a chemical reaction, MATTER is NOT CREATED nor DESTROYED.

7. In chemical reactions, MATTER is NOT CREATED nor DESTROYED
In chemical reactions, MATTER is NOT CREATED nor DESTROYED. The same atoms are just REARRANGED into NEW MOLECULES.
2 H2O  2 H2 + O2 2 CH2 + 3 O2  2 CO2 + 2 H2O 6 CO2 + 6 H2O  C6H12O6 + 6 O2

8. Everything balances out in the end...
Can you tell me which chemical reaction below BEST represents photosynthesis?

9. Everything balances out in the end...
Can you tell me which CHEMICAL REACTION below BEST represents photosynthesis?
WHY???

10. In chemical reactions, MATTER is NOT CREATED nor DESTROYED
In chemical reactions, MATTER is NOT CREATED nor DESTROYED. The same atoms are just REARRANGED into NEW MOLECULES.
2 H2O  2 H2 + O2 2 CH2 + 3 O2  2 CO2 + 2 H2O 6 CO2 + 6 H2O  C6H12O6 + 6 O2

11. CH4 + O2  CO2 + H2O Which TWO below should be added above
so that REACTANTS = PRODUCTS?

12. CH4 + 2 O2  CO2 + 2 H2O Which two below should be added above
so that REACTANTS = PRODUCTS?

13. Which respiration reaction is right
Which respiration reaction is right? (count the atoms on each side) According to the law of conservation of matter (mass)
C6H12O6 + O2  6 H2O + 3 CO2
C6H12O O2  6 H2O + 6 CO2
2 C6H12O O2  6 H2O CO2

14. The respiration reaction is how living things turn sugar into energy…it is a combustion reaction with O2.

15. The respiration reaction is how living things turn sugar into energy…it is a combustion reaction with O2.

16. The respiration reaction is how living things turn sugar into energy…it is a combustion reaction with O2.

17. The respiration reaction is how living things turn sugar into energy…it is a combustion reaction with O2.

18. The respiration reaction is how living things turn sugar into energy…it is a combustion reaction with O2.

19. Which respiration reaction is right
Which respiration reaction is right? (count the atoms on each side) According to the law of conservation of matter (mass)
C6H12O6 + O2  6 H2O + 3 CO2
C6H12O O2  6 H2O + 6 CO2
2 C6H12O O2  6 H2O CO2

20. Is the combustion of sugar a synthesis or decomposition reaction?
C6H12O6 + O2  6 H2O + 3 CO2
C6H12O O2  6 H2O + 6 CO2
2 C6H12O O2  6 H2O CO2

21. Is the combustion of sugar a synthesis or decomposition reaction?
C6H12O6 + O2  6 H2O + 3 CO2
C6H12O O2  6 H2O + 6 CO2
2 C6H12O O2  6 H2O CO2

22. Is the combustion of sugar an endothermic or exothermic reaction?
C6H12O6 + O2  6 H2O + 3 CO2
C6H12O O2  6 H2O + 6 CO2
2 C6H12O O2  6 H2O CO2

23. Is the combustion of sugar an endothermic or exothermic reaction?
C6H12O6 + O2  6 H2O + 3 CO2
C6H12O O2  6 H2O + 6 CO2
2 C6H12O O2  6 H2O CO2

25. FINISH EZ COEFFIECIENTS TO BALANCE….

26. Which reaction above shows the law of conservation of matter (mass)
Are all of these reactions balanced?

27. Matter is neither created nor destroyed
IN A CHEMICAL REACTION
Matter is neither created nor destroyed
LAW OF CONSERVATION OF MATTER (MASS)

28. LAW OF CONSERVATION OF MATTER (MASS)
WHY IS MASS tacked on here?

29. LAW OF CONSERVATION OF MATTER (MASS)
It’s actually quite simple
LAW OF CONSERVATION OF MATTER (MASS)
WHY IS MASS tacked on here?

30. Why is the law called CONSERVATION OF matter or MASS?

31. WE GOT ___ REACTANTS TURNING INTO ONE PRODUCT HERE.
REACTIONS make NEW PRODUCTS from old reactants. Matter is not created nor destroyed.
WE GOT ___ REACTANTS TURNING INTO ONE PRODUCT HERE.

32. REACTIONS make NEW PRODUCTS from old reactants
REACTIONS make NEW PRODUCTS from old reactants. Matter is not created nor destroyed.
WE GOT 2 REACTANTS TURNING INTO ONE PRODUCT HERE. Same atoms are CONSERVED on both sides.

33. Same atoms are CONSERVED on both sides.
So, if our 2 REACTANTS have a MASS of 10 pounds, how many pounds of PRODUCT do we have?
Same atoms are CONSERVED on both sides.
10 lbs.

34. So, if our 2 REACTANTS have a MASS of 10 pounds, the PRODUCT must have a MASS of 10 pounds.
Same atoms are CONSERVED on both sides.
Same MASS is CONSERVED on both sides!
10 lbs.
10 lbs.

35. So, if our 2 REACTANTS have a MASS of 10 pounds, the PRODUCT must have a MASS of 10 pounds.
Same atoms are CONSERVED on both sides.
Same MASS is CONSERVED on both sides!
Matter wasn’t created nor destroyed,
just rearranged molecularly
10 lbs.
10 lbs.

36. LAW OF CONSERVATION OF MATTER (MASS)
You can do some cool things
knowing the
TOTAL REACTANT MASS = TOTAL PRODUCT MASS
LAW OF CONSERVATION OF MATTER (MASS)
WHY IS MASS tacked on here?

37. TOTAL REACTANT MASS = TOTAL PRODUCT MASS
What if you start with 8 pounds of calcium reactant and you end up with 10 pounds of total product…
TOTAL REACTANT MASS = TOTAL PRODUCT MASS
8 lbs.
10 lbs.

38. TOTAL REACTANT MASS = TOTAL PRODUCT MASS
What if you start with 8 pounds of calcium reactant and you end up with 10 pounds of total product…How much oxygen did you need for this reaction?
TOTAL REACTANT MASS = TOTAL PRODUCT MASS
8 lbs.
???
10 lbs.

39. TOTAL REACTANT MASS = TOTAL PRODUCT MASS
What if you start with 8 pounds of calcium reactant and you end up with 10 pounds of total product…How much oxygen did you need for this reaction? 2 pounds!
TOTAL REACTANT MASS = TOTAL PRODUCT MASS
8 lbs.
2 lbs!!!
10 lbs.

40. TOTAL REACTANT MASS = TOTAL PRODUCT MASS
What if you start with 12 pounds of calcium reactant and you end up with 4 pounds of oxygen, how much product is made?
TOTAL REACTANT MASS = TOTAL PRODUCT MASS
12 lbs.
4 lbs.
??? lbs.

41. TOTAL REACTANT MASS = TOTAL PRODUCT MASS
What if you start with 12 pounds of calcium reactant and you end up with 4 pounds of oxygen, how much product is made? 16 pounds!
TOTAL REACTANT MASS = TOTAL PRODUCT MASS
12 lbs.
4 lbs.
16 lbs.

42. TOTAL REACTANT MASS = TOTAL PRODUCT MASS
WHAT IF WE STARTED WITH 20 mL of HYDROGEN PEROXIDE (H2O2)
20 mL

43. TOTAL REACTANT MASS = TOTAL PRODUCT MASS
WHAT IF WE STARTED WITH 20 mL of HYDROGEN PEROXIDE (H2O2) and MADE 16 mL of WATER.
20 mL
16 mL

44. TOTAL REACTANT MASS = TOTAL PRODUCT MASS
WHAT IF WE STARTED WITH 20 mL of HYDROGEN PEROXIDE (H2O2) and MADE 16 mL of WATER.
HOW MUCH OXYGEN GAS IS PRODUCED?
20 mL
16 mL
??? mL

45. TOTAL REACTANT MASS = TOTAL PRODUCT MASS
WHAT IF WE STARTED WITH 20 mL of HYDROGEN PEROXIDE (H2O2) and MADE 16 mL of WATER.
HOW MUCH OXYGEN GAS IS PRODUCED? 4 mL!
20 mL
16 mL
4 mL!!!

46. How much oxygen gas do you need when you produce 14 grams of product from 11 grams of methane (CH4)?

47. How much oxygen gas do you need when you produce 14 grams of product from 11 grams of methane (CH4)?
11 g ???? = grams total

48. How much oxygen gas do you need when you produce 14 grams of product from 11 grams of methane (CH4)?
11 g g = grams total

49. How much carbon dioxide gas would be made from 32 mL of methane (CH4) & 12 mL of oxygen gas if you ended up with 24 mL of water?

50. How much carbon dioxide gas would be made from 32 mL of methane (CH4) & 12 mL of oxygen gas if you ended up with 24 mL of water?
32 mL mL = ???? mL
These problems are e-z, you just solve the equation
for the missing variable!

51. How much carbon dioxide gas would be made from 32 mL of methane (CH4) & 12 mL of oxygen gas if you ended up with 24 mL of water?
32 mL mL = mL mL
These problems are e-z, you just solve the equation
for the missing variable!

52. Quiz/worksheet

53. conserv of matter lab