Density And Flotation

Question 0

What is the formula for volume

Answer 0

Mass divided by density

Question 1

What is the formula for density

Answer 1

Mass divided by volume

Question 2

What is the formula for mass

Answer 2

Density by volume

Question 3

What are the two sets of measurements we use for density

Answer 3

G/cm3 or kg/m3

Question 4

How do you find the volume of a regular solid

Answer 4

Length x width x height

Question 5

Explain the experiment To measure the density of a solid rectangular block

Answer 5

Measure the mass of the rectangular block and write down your result. Make sure the value of mass is in grams.
Measure the length, width, and height of the rectangular block and calculate the volume using volume = length x width x height. Make sure the value of the volume is in cm3.3 Repeat the procedure using rectangular blocks made of different materials and make a note of the different values of density.

Conclusion: The density of a rectangular solid block was found by using values of mass and volume and by using the mathematical formula

Question 6

Explain the experiment To measure the density of an irregular solid

Answer 6

Measure the mass of the irregular solid and write down your result. Make sure the value of mass is in grams.
Pour water into the overflow can until some spills out into the graduated cylinder.Carefully read the level of the water in the graduated cylinder and write down the value.
Place the irregular solid into the overflow can and allow it to sink to the bottom. Take care not to splash water.
Carefully read the new level of the water in the graduated cylinder and write down the value.
If you subtract the two values you have written down you will get the volume of the irregular solid. Calculate density

Conclusion: The density of an irregular solid was found by using values of mass and volume and by using the mathematical formula above.

Question 7

Explain the experiment To measure the density of a liquid

Answer 7

Place an empty graduated cylinder on a balance and make a note of the mass of the graduated cylinder
Carefully pour a certain amount of a liquid into the graduated cylinder. Record this amount
Read the value of mass that is now shown on the balance, remembering that this value of mass is for both the liquid and the graduated cylinder.
To get the value of the mass of the liquid you subtract the two values of mass that you noted.
Conclusion:
The density of a liquid was found by using values of mass and volume and by using the mathematical formula above.

Question 8

How do things float

Answer 8

A solid will float in a liquid if the solid is less dense than the liquid.
A liquid will float on top of another liquid if the liquid on top is less dense.