Activity 1: Scientific Method and States of Matter

Does hot water or cold water boil faster?



Experiment 1- 16 ounces of cold water- temperature turned onto number 7



Experiment 2- 16 ounces cold water, temperature on number 7




Experiment 1- 16 ounces of hot water, temperature turned onto number 7



Experiment 2- 16 ounces, temperature is on number 7



2. I believe that the hot water will boil faster than the cold water due to fact that it's temperature is higher than the cold.



3. For both experiments, I used 16 fluid ounces and the stove was turned onto heat temperature #7.

Experiment 1
Water	Start Time	Boil Time	Difference
Cold Water	2:05	2:09	4 Minutes
Hot Water	2:12	2:15	3 Minutes
Experiment 2
Water	Start Time	Boil Time	Difference
Cold Water	2:18	2:25	7 Minutes
Hot Water	2:31	2:35	4 Minutes

5. Controlled Variables: Pan, Water

6. I believe that the hot water boiled before the cold water because the hot water temperatue is already high and needs less energy to raise it further.

7. Image of atom that make up water molecules:

Water Molecules are made up on one oxygen molecule and 2 hydrogen molecules.









8. Animation that shows how water molecules are arranged in the three states of matter for water. (Once link is open click on the word Magnify under the picture.)

Solid State: http://www.visionlearning.com//app/obj_tools/library/objects/Flash/VLObject-1435-030317040352.swf

Liquid State:

http://www.visionlearning.com/library/flash_viewer.php?oid=1434&mid=120

Gas State:

http://www.visionlearning.com/library/flash_viewer.php?oid=321&mid=120

9. Scientific Method: 

• Ask a Question
• Do Background Research
• Construct a Hypothesis
• Test Your Hypothesis by Doing an Experiment
• Analyze Your Data and Draw a Conclusion
• Communicate Your Results

Step 1: Ask a question: Does hot water or cold water boil faster?

Step 2: Do background research: Has there been other research done?  Researched the topic online.  Also looked at options as to how I wanted to setup this experiment.

Step 3: Construct Hypothesis: I made a guess that the hot water would boil faster do to the higher temperature it is already at.

Step 4: Test with an experiment: As my pictures and graph show above, I tested this experiment twice.  I used the same amount of water both times but tried two differen pans to boil the water in. 

Step 5: Analyze results/Draw Conclusion: When looking at my results it showed that the hot water boiled before the cold. 

Step 6: Hypothesis is True or Hypothesis is False or partically true:  My hypothesis was true as my data shows the results of a quicker boil time for hot water.

Step 7: Retest the experiment: This time I used different pan, but the same amount of water. 

Step 8: Report Results: After performing this experiment for a second time I found that hot water does boil before cold water.