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Conservation of mass

5th grade (Year 6 in England) · 16 questions · Common Core: NGSS.5-PS1-2, NGSS.MS-PS1-5 · England: KS3 Chemistry: Chemical reactions

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  1. Question 1

    250 g of water is frozen in a sealed tub. What is the mass of the ice, in g?

    Answerg

  2. Question 2

    Vinegar and bicarbonate of soda (baking soda) react in an open beaker. The mass falls from 156 g to 153.4 g. What mass of gas escaped, in g?

    Answerg

  3. Question 3

    In a sealed flask, 83 g of one chemical reacts with 20 g of another. What is the total mass of the products, in g?

    Answerg

  4. Question 4

    340 g of chocolate is melted in a bowl. What is the mass of the melted chocolate, in g?

    Answerg

  5. Question 5

    Vinegar and bicarbonate of soda (baking soda) react in an open beaker. The mass falls from 256 g to 251.6 g. What mass of gas escaped, in g?

    Answerg

  6. Question 6

    In a sealed flask, 37 g of one chemical reacts with 37 g of another. What is the total mass of the products, in g?

    Answerg

  7. Question 7

    An ice cube of 200 g melts completely in a sealed bag. What is the mass of the water, in g?

    Answerg

  8. Question 8

    Vinegar and bicarbonate of soda (baking soda) react in an open beaker. The mass falls from 166 g to 163.4 g. What mass of gas escaped, in g?

    Answerg

  9. Question 9

    In a sealed flask, 85 g of one chemical reacts with 48 g of another. What is the total mass of the products, in g?

    Answerg

  10. Question 10

    250 g of water is frozen in a sealed tub. What is the mass of the ice, in g?

    Answerg

  11. Question 11

    Vinegar and bicarbonate of soda (baking soda) react in an open beaker. The mass falls from 191 g to 186.6 g. What mass of gas escaped, in g?

    Answerg

  12. Question 12

    In a sealed flask, 77 g of one chemical reacts with 60 g of another. What is the total mass of the products, in g?

    Answerg

  13. Question 13

    An ice cube of 120 g melts completely in a sealed bag. What is the mass of the water, in g?

    Answerg

  14. Question 14

    Vinegar and bicarbonate of soda (baking soda) react in an open beaker. The mass falls from 164 g to 159.6 g. What mass of gas escaped, in g?

    Answerg

  15. Question 15

    In a sealed flask, 32 g of one chemical reacts with 39 g of another. What is the total mass of the products, in g?

    Answerg

  16. Question 16

    50 g of chocolate is melted in a bowl. What is the mass of the melted chocolate, in g?

    Answerg

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Answer key: Conservation of mass

  1. 1. 250 g

  2. 2. 2.6 g

  3. 3. 103 g

  4. 4. 340 g

  5. 5. 4.4 g

  6. 6. 74 g

  7. 7. 200 g

  8. 8. 2.6 g

  9. 9. 133 g

  10. 10. 250 g

  11. 11. 4.4 g

  12. 12. 137 g

  13. 13. 120 g

  14. 14. 4.4 g

  15. 15. 71 g

  16. 16. 50 g