9 - Density: exercices

1. a. Calculate the density of a substance with a mass of 130 g and a volume of 50 cm3.
   b. What substance is this?

2. a. A liquid has a mass of 168 g and a volume of 200 cm3.
       Calculate the density of this liquid.
   b. Which liquid is this?

3. a. A balloon measuring 400 cm3 contains 71.2 g of gas. Calculate the density of the gas.
    b. What gas is the balloon filled with?

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4. Calculate the mass of a 25 cm3 iron object.

5. A brick is 120 cm3 in size. Calculate the mass of the stone.

6. Calculate the mass of 80 cm3 of alcohol.

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7. The mass of a copper object is 403.2 g. Calculate the volume.

8. Angela has a bracelet of 42 g silver. Calculate the volume of the bracelet.

9. Calculate the volume of 1224 g of gasoline.

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10. An oak board is 1.2 m long, 3 dm wide and 6 cm high.http://osbexact.nl/images/dichtheid/balk_nieuw_foto_web.jpg
a. Calculate the volume of the bar.
b. Calculate the mass of the beam.

 

 

11. The bar next door is made of pine wood.
Calculate the mass of this beam in g and kg.

 

 

 

12. A piece of nickel is 28 cm long, 3 cm wide and 8 mm high.
      a. Calculate the volume of the nickel piece.
      b. Calculate the mass of the nickel piece.

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13. A ship illegally discharges 200 liters of fuel oil at sea.
      a. Calculate the mass of the fuel oil discharged.
      b. Why does fuel oil float on seawater?
      c. What drives fuel oil the best: water or seawater? Why?

 

14. How do you measure the mass?

15. How can you measure the volume of a liquid?

16. How can you determine the volume of a regular item?

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17. A measuring glass is filled to 50 mL.
One puts a brick in the measuring glass
causing the liquid to rise to 78 mL.
a. Calculate the volume of the brick in cm3.
b. Calculate the mass of the brick.

 

 

 

18. An empty measuring glass has a mass of 125 g. 60 mL of liquid is poured into the measuring glass.
The measuring glass with the liquid in it is weighed. It now weighs 172.4 g together.
a. Make a drawing of the empty measuring glass and write in the mass.
b. Make a drawing of the filled measuring glass next to it and write the mass.
c. Calculate the mass of the liquid poured into the measuring glass.
d. Calculate the density of the liquid.
e. Which liquid has been poured into the measuring glass?

http://www.zijn-wij-dat.nl/uploaded_images/weegschaal-703956.jpg

 

19. In the Care and Welfare Department a medicine is made by weighing the mass of a substance on a balance.
a. How many grams does this substance weigh?
The volume of the fabric is 73.25 cm3.
b. Calculate the density of the drug.

 

20. You should drink well during intensive exercise, but you do not want to carry too much mass with you. You have a 200 ml bottle for your drink.
If you want to lift as little mass as possible, do you have to fill the bottle with water or with an energy drink with a density of 1.15 g / cm3? Why?

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21. There is milk in a measuring cup. See the image on the right.
The density of milk can vary slightly.
a. Calculate the maximum mass of the milk.
b. Calculate the minimum mass of the milk.

 

 

 

 

22. See the image on the right.
On a scale (balance) is a piece of rubber (mass in g).
Calculate the volume of the rubber.