1. Sugar Cube Lab

2. What is the purpose? Purpose or problem…
How does weathering affect dissolve time?

3. Hypothesis
State what your hypothesis (or educated guess is) in the form of a IF…. THEN statement.

4. Materials Cup Beaker Spoon 2 sugar cubes Water Hammer Plastic baggies
Timer

5. Procedure
Measure 100 mL in a beaker then pour water into your plastic cup
Put ONE sugar cube into the plastic cup and stir in a figure eight motion. Record the amount of time it takes for the sugar cube to dissolve.
Pour out contents of plastic cup and measure out 100 mL in a beaker and pour the water back into the plastic cup
Smash the other sugar cube, while in the plastic baggie, cut the baggie, then place it into the water. Stir using a figure eight motion and record the time it takes to dissolve.
Clean up area by pouring out water, placing spoon back into the cup, and placing the baggie next to the cup.

6. Parts of the experiment
Manipulated variable
Weathering of the sugar cube
Responding Variable
Time it takes to dissolve
Constants
Amount of water, stirring motion, temperature of water
Control
The whole sugar cube (not crushed one)

7. GRAPHING
Label the x-axis as your independent variable (weathered and solid)
Label the y-axis as your dependent variable (time to dissolve in seconds)
Make weathered one color and solid another and make a key
Make a scale for your graph starting with 30 seconds. Increase by 10 each time.
Graph your data from all groups

8. Conclusion
Did the sugar dissolve at the same rate during both trials? Explain why or why not
Do you think one large rock or several smaller rocks would wear away faster? Explain your answer.
Was your hypothesis correct? If not, what is your new IF… THEN statement?
You can use a separate sheet of paper for this