8.6E Law of Conservation of Mass

Maria fills a bowl with 200 g of water. She puts the bowl of water in the freezer, and the water freezes. Which will most likely be the mass of the frozen water?

• 50 g
• 100 g
• 200 g
• 400 g

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TEKS.SCI.8.6E

What is the Law of Conservation of mass?

• Mass is created in a chemical reaction
• Mass is created in a physical change
• New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
• Mass is never created or destroyed

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TEKS.SCI.8.6E

If reaction starts with 20g of reactants it should produce 

• a total of 40g of products
• a total of 10g of products
• a total of 80 g of products
• a total of 20g of products

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TEKS.SCI.8.6E

Mathematical Equivalence

OFF

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TEKS.SCI.8.6E

The ​ (a)   states that the same amount of ​ (b)   in the ​ (c)   must be present after a reaction in the ​ (d)   . So if 2g oxygen react with 3g hydrogen, the water they form will have a mass of ​ (e)   .

• Law of Conservation of Mass
• matter/mass
• reactants
• products
• 5g

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TEKS.SCI.8.6E

• Potassium, Iodine, Oxygen, Carbon

• Potassium, Chlorine, Oxygen

• Kalcium, Oxygen, Hydrogen

• Hydrogen, Calcium, Sulfur, Xenon

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TEKS.SCI.8.6E