1. Created by Ms. Fatima-UCF Intern
4.10 Density
Created by Ms. Fatima-UCF Intern

2. 4.10 Density 1. 2.

3. Density Facts

4. Density Facts

5. 4.10 Laboratory Investigation: Density
Directions: Fill out the data tables and answer all questions below.
Part I: Calculating Density
How is the density of a substance calculated?  
2. If the shape of an object is irregular, like a stone, how can you measure its volume? 
3. If the volume of a cube of wood is cm3 and its mass is grams, show the calculation for the density of the wood.

6. 4.10 Laboratory Investigation: Density
4. Based on the density of the wood that you calculated above, would the wood float or sink if it is placed in a bowl of water?  Explain your answer. Remember that the density of liquid water is 1.00 g/cm3.
5. A marble or small sphere, made of stone, is found to have a mass of 3.05 grams. To find its volume, it is placed in a graduated cylinder that originally contains mL of water. When the marble is placed in the graduated cylinder, the new volume of the water and marble together is mL. 
a. Calculate the volume of the marble (Be sure to include units).
b. Calculate the density of the marble (Be sure to include units).

7. Helpful Hints for Lab
Higher the density, the object is lower in the container.
Lower the density, the object is higher in the container.
Here is a piece wood and a stone in a container of water.
The stone has a lower density compared to the stone.

8. Choose Four Liquids and Predict
Pick four from list below: Fresh water, Salt water, Vegetable oil, Rubbing alcohol, Dish soap, Honey, Corn syrup, Milk, Maple syrup
HINT!
Imagine slowly pouring the four liquids you picked into a container. Once they settled which one would be on the bottom? What would the order be?
Prediction: Rank the four liquids from lowest density (top) to highest density (bottom)

9. Calculate the Density of Four Liquids You Picked
Mass (g)
Volume (ml)
Density (g/ml)
D=M/V
1. Fresh water
23.8 g
24 ml
2. Salt water
75 g
800 ml
3. Vegetable oil
150 g
50 ml
4. Rubbing alcohol
.02g
10 ml
5. Dish soap
300 g
500 ml
6. Honey
454 g
480 ml
7. Corn syrup
69 g
8. Milk
25 g
130 ml
9. Maple syrup g
360 ml

10. What is the Order of the Four Liquids
Based on densities you calculated, what should the order be. Fill in the chart below.
Rank the four liquids from lowest density (top) to highest density (bottom)

11. Objects (Decide where each object would settle)
Add in Objects
Object
Object Density
1. Ping pong ball
0.077 g/cm³
2. Small bolt
7.7 g/cm³
3. Popcorn kernel
1.3 g/cm³
4. Peanut
0.64 g/cm³
5. Blueberry
0.69 g/cm³
6. Grape
1.11 g/cm³
7. Cherry tomato
2.3 g/cm³
Directions: If you added 4 objects to your container of liquids where would they settle? Use the objects from the list on the right.
Rank the four liquids from lowest density (top) to highest density (bottom)
Objects (Decide where each object would settle)

12. Observations and Conclusions
6a. Define density.
6b. Describe how this activity helps you compare the density of four different liquids without making mass measurements.

13. Observations and Conclusions
7a. How did the observations compare to your predictions?
7b. Did any of the results surprise you?

14. Observations and Conclusions
8a. How would the density of water change if you measured out ½ cup instead of ¼ cup?
8b. Explain your answer.

15. Guess what?!? You are DONE! Save your file! Go to:
FileSaveWhiteboardCurrent Screen GroupsGive It a Name Make sure it is a WHITEBOARD PDF FILE
SUBMIT this ONE FILE for 4.10