Back to the lesson and practice
ActivityPractice worksheet
Do it🖨️ On paper✏️ On screen
New copyMake a new one

Works with a finger, a stylus or a mouse. Nothing is saved or sent anywhere.

Write your answers with a finger, mouse or stylus. Switch to Scroll to move around the page. A stylus always writes.

eurekami

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

Name

Date

Score/ 16

  1. Question 1

    In a sealed flask, 24 g of one chemical reacts with 51 g of another. What is the total mass of the products, in g?

    Answerg

  2. Question 2

    Vinegar and bicarbonate of soda (baking soda) react in an open beaker. The mass falls from 167 g to 164.4 g. What mass of gas escaped, in g?

    Answerg

  3. Question 3

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

    Answerg

  4. Question 4

    In a sealed flask, 66 g of one chemical reacts with 54 g of another. What is the total mass of the products, in g?

    Answerg

  5. Question 5

    Vinegar and bicarbonate of soda (baking soda) react in an open beaker. The mass falls from 189 g to 187.9 g. What mass of gas escaped, in g?

    Answerg

  6. Question 6

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

    Answerg

  7. Question 7

    In a sealed flask, 55 g of one chemical reacts with 39 g of another. What is the total mass of the products, in g?

    Answerg

  8. Question 8

    Vinegar and bicarbonate of soda (baking soda) react in an open beaker. The mass falls from 178 g to 175.4 g. What mass of gas escaped, in g?

    Answerg

  9. Question 9

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

    Answerg

  10. Question 10

    In a sealed flask, 37 g of one chemical reacts with 60 g of another. What is the total mass of the products, in g?

    Answerg

  11. Question 11

    Vinegar and bicarbonate of soda (baking soda) react in an open beaker. The mass falls from 183 g to 180.4 g. What mass of gas escaped, in g?

    Answerg

  12. Question 12

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

    Answerg

  13. Question 13

    In a sealed flask, 21 g of one chemical reacts with 28 g of another. What is the total mass of the products, in g?

    Answerg

  14. Question 14

    Vinegar and bicarbonate of soda (baking soda) react in an open beaker. The mass falls from 156 g to 151.6 g. What mass of gas escaped, in g?

    Answerg

  15. Question 15

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

    Answerg

  16. Question 16

    In a sealed flask, 64 g of one chemical reacts with 59 g of another. What is the total mass of the products, in g?

    Answerg

Write your answers right on the page. · Free from eurekami.com

All done? Check your answers
  1. 75 g
  2. 2.6 g
  3. 250 g
  4. 120 g
  5. 1.1 g
  6. 200 g
  7. 94 g
  8. 2.6 g
  9. 120 g
  10. 97 g
  11. 2.6 g
  12. 120 g
  13. 49 g
  14. 4.4 g
  15. 340 g
  16. 123 g