Will it sink or float lab

Will It Sink or Float?

1. Make observations and predictions for each of the objects.

2. Measure the mass of one of the objects on the scale. Record in the data table.

3. Place enough water in the graduated cylinder to cover your object completely. Record

the volume of the water on the data table below under V₁. 

4. Then add the object to the water and record the volume on your data table under V₂.

5. Then subtract V₂ – V₁ to find the volume of the object. Then add the volume to your data table below.

6. Then calculate the density of your object with the formula D = M/V. Density = mass/volume

Object	Observations (think about why objects sink or float)	Prediction (sink or float)	Mass (g)	Volume (mL)	Density (g/mL)	Result: sink or float?
Condiment package
Carrot
Rock
Die
Cork

Object	Volume of water without object (mL)  V1	Volume of water with objects (mL) V2	Volume of object (mL) V2 – V1 = volume of object
condiment package
carrot
rock
die
cork

3. Which objects sank in water? What do the items that sank in the water have in common? What is the relationship in their density?

4. Which objects floated in water? What do the items that floated in the water have in common? What is the relationship in their density?

5. Explain the procedure how to find the density of an irregular object like a marble to someone who has never done this lab before.

6. Draw a model of what the molecules look like (inside that you are unable to see) for each of the five different objects.  Think about the density of each object and why they have a different density.  What is the cause of this difference then show that in your pictures.