Name: ______Per: ____Date: ______

Online Virtual Density Lab

Directions:1) This lab will be collected at the end of the class.

2) Please show all your calculations and work in the space provided.

3) Always remember your units.

Part A:1) Go to:

2) Drag and drop the object to the scale and record their mass.

3) Drag and drop the object to the graduated cylinder and record their volume.

4) Drag and drop the object to the liquid container and record if the float or not,

5) Calculate the Density of each object.

6) Answer the discussion questions in full sentences.

Table of Observations:

Object / Mass (g) / Volume (ml) / Calculations / Density (g/ml) / Float or Sink
Red Square
Pink Block
Purple Oval
Orange Rectangle
Blue Square
Green Triangle
Grey Triangle
Blue Triangle
Red/Black Rectangle
Red Oval

Record the density of the liquid in the pail: ______g/ml

Discussion Questions:

1)Review your observations. Does mass of an object determine whether the object will float?

2)Review your observations. Does the volume of an object determine whether the object will float?

3) a) Make a list of the floating objects and their densities.

b)How does the densities of these objects compare with the density of the liquid in the pail?

c)Make a list of the sinking objects and their densities.

d)How does the densities of these objects compare with the density of the liquid in the pail?

4)Increase the density of the liquid in the pail to 2.0 g/ml. Select any 5 objects. Predict whether the objects you selected will float or sink. Record your predictions below.

Object / Prediction Float or Sink / Results

Select the objects and drop them into the pail and record the results.

Conclusion:

1)Summarize in 3 or 4 sentences the evidence you collected in regards to how knowing the density of objects can determine whether they will float or sink in a given liquid.

2)A solid object has a length of 8 cm, a width of 4 cm and a height of 2 cm. It has a mass of 47 g. Will this object float or sink in water which has a density of 1.0 g/ml? Show all your calculations.

3)28.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL mark. From this information, calculate the density of iron.

4)What volume of silver metal will weigh exactly 2500.0 g. The density of silver is 10.5 g/cm3.

5)A sample of matter is found to have a mass of 32.6 g. A graduated cylindercontains 2.8 mL of water. After the sample is added to the cylinder thewater level reads 5.7 mL. Calculate the density of the sample and determine its identity from the list below.

Asphalt l.2 g/mL

Mercury 13.6 g/mL

Lead 11g/mL

Cork 0.26 g/mL