Law of Conservation of Mass
Presentation
•
Science
•
9th Grade
•
Hard
Joseph Anderson
FREE Resource
3 Slides • 6 Questions
1
Law of Conservation of Mass
Means, that the amount of mass a reaction starts with must be equal to the amount of mass that it must end with
OR PERHAPS MORE SCIENTIFICALLY -
Matter cannot be created or destroyed.
2
Multiple Choice
What is the Law of Conservation of mass?
Matter cannot be created nor destroyed
Matter can be created and destroyed
Matter can only be created
Matter can only be destroyed
3
-Ms Lockwood
So... here are some questions for you to consider what that actually MEANS
4
Multiple Choice
Bob puts 200 g of ice into a pitcher with 900 g of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?
200 g
700 g
1100 g
900 g
5
Multiple Choice
32 g of oxygen completely reacts with 8 g of hydrogen to produce ___ g water
8
12
24
40
6
Multiple Choice
They both will weigh the same
The product always weighs more than the reactant
The reactant will weigh more than the product
They both will loose mass after the reaction
7
Open Ended
Write down what you understand the law of conservation to mean...
8
Multiple Choice
Can you determine how quickly reaction has occurred by measuring the products formed?
Yes
No
9
Since the mass of products formed is equal to the mass of reactants used, we can absolutely use the amount of product form to determine the speed of a reaction
Law of Conservation of Mass
Means, that the amount of mass a reaction starts with must be equal to the amount of mass that it must end with
OR PERHAPS MORE SCIENTIFICALLY -
Matter cannot be created or destroyed.
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