Sundae Lab

Which has more density, a hot fudge sundae or a caramel sundae?

Density is mass divided by volume. To find the volume of an object, water displacement can be used. Mass is determined using the scale. A sundae is an ice cream treat with a sauce on top. Hot fudge is a sauce made from sugar and cocoa. Caramel is a sauce made from corn syrup and water.

Hypothesis: If__________________________________ then________________________________ because ___.

Experiment:

Materials –

· Microwave

· Two 500ml bowls

· Two spoons (teaspoons)

· 2 - 90 milliliters of ice cream (small ice cream cups)

· 30 milliliters of hot fudge

· 30 milliliters of caramel

· graduated cylinder

· 1000 ml beakers

· tub

· marking pencil

· balance

· ruler

· calculator

Safety:

Cautions when using a microwave.

Use beaker tongs with hot beakers.

Caution when working with glass.

Procedure:

1. Measure 200 mL water into 1000 mL beaker

2. Measure 100 mL water into graduated cylinder

3. Pour into tub and mark water level with marking pencil

4. Pour 30 mL caramel onto 90 mL of ice cream

5. Place caramel sundae in tub of water.

6. Mark (higher or new) water level with marking pencil (sketch what you see)

7. Remove sundae

8. In 10 mL increments (using your graduated cylinder) pour water tub until water reaches the higher (second) black mark. Keep track of how many times you had to pour 10 mL of water into the tub in order to reach that second mark. Use hash marks as your record.

9. Turn on scale.

10. Place caramel sundae on scale and read the amount of mass. (sketch what you see)

11. Pour water from the tub back into the 1000 mL beaker.

12. Heat 30 mL of hot fudge in the microwave for 30 seconds.

13. Repeat steps 2 through 11.

14. Clean up and eat your sundae!

Data Analysis:

	Grams of mass	volume
Hot fudge sundae
Caramel sundae

Calculations: density = mass/volume (caramel sundae)

Density = mass/volume (hot fudge sundae)

Conclusion:

My hypothesis was (valid or invalid) because __________________________.

Repeat Work:

What would you change the next time you did this experiment? Or why would you keep the experiment the same?