activity 1

three experimental questions to answer:

1. does hot water or cold water freeze faster?
      * cold water
2. does hot water or cold water boil faster?
     * hot water
3. Does salt water freeze faster or slower than regular water?
     * freeze slower

Questions/items to include in your blog posting for the activity:
1. Pictures of your experimental materials and set-up:
      
(salt water on the right, cold water on the left

(hot water on the left, cold water on the right)

2. your hypothesis to the question posted.
          I predicted that the cold water would freeze faster than the hot water because the water is already at a colder temperature. For the second question I predicted that the hot water would come to a boil faster than the cold water because the hot water is already hot and doesn't have to go up very many degrees to get to boiling. For the last question I predicted the salt water would freeze slower than the regular water and to be honest I don't really have a reason on why I think this. I just figured water having nothing in it would most likely freeze faster.

 3. data in the form of a graph or table

Water type (1 cup)	Freezing time	Boiling time
Hot water	1 Hour, 21 Min.	3 Min., 31 Sec.
Cold water	1 Hour, 8 Min.	3 Min, 33 Sec.
Cup cold water with 1t. salt	1 Hour, 31 Min.	N/A

4. show data of the experiment repeated

Water type (1 cup)	Freezing time	Boiling time
Hot water	1 Hour, 24 Min.	3 Min., 28 Sec.
Cold water	1 Hour, 10 Min.	3 Min., 29 Sec.
Cup cold water with 1t. salt	1 Hour, 33 Min.	N/A

5. List your controlled variables for your experiment- using the same tap water
-same pot for boiling water (set at highest heat 10)
- using the same burner
-same plastic cups
(water boiling= bubles on the surface water frozen=water was solid when pushed on)

6. Formulate a theory that answers the questions posted 

          After performing the experiment I learned it does not matter if water is hot or cold, they will both boil at about the same time. (It happened with in a few seconds of each other with I did it). Hot water and cold water both freeze but after doing the experiment I learned hot water takes a little longer to freeze. (hot water took on average 10+ minutes longer than the cold water). Lastly with the salt water. I leaned cold water with a teaspoon of salt mixed in does not fully freeze. The water with no salt froze rock solid, but the salt water just got slushy. (When I think about it the natural salt waters that we have in our environment i.e. oceans, they don't ever freeze over either.)

7. Image of the atoms that make up water molecules

Water Molecule

8. Video or animation that shows how water molecules are arranged in the three states of matter for water

http://www.youtube.com/watch?v=v12xG80KcZw

9. Describe the scientific method/process and how each step correlates to your own experiments

observation/ask a question: this is where a question is asked
          Is there going to be a change in boiling or freezing time if you use hot water, cold water or salt water?

Make a hypothesis: what you think will happen before you do the experiment (prediction)
          Hot water will boiler faster, while colder water will freeze faster. Regular water will freeze faster than salt water.

Do the actual experiment: do the experiment to test your hypothesis
          To make sure the experiment was going to give me accurate results I made sure to do a few things. When boiling the water I turned to burner on and waited 30 seconds for it to get hot. I set the pan filled with one cup of hot water first on the burner and started the timer on my phone. When I saw bubbles coming to the surface I stopped my watch and recorded the time. When I did the cold water i waited for the burner to fully cool before I started. I used the same pan that I used for the hot water but I made sure it was fully cooled. I used the sames steps and recorded the time.

          When I did the experiment with freezing the water I used two of the same plastic cups with out covering them. I started the time on my phone. I considered the water frozen when I could push on the top of the glass and it was solid.

Review the outcome: after the experiment is performed look at the results and decide if your hypothesis was correct or not
          I thought the hot water would boil faster and the cold water would freeze faster. After doing the experiment I learned the Hot water actually froze faster and the boiling temp of the two water was the same. There for I was incorrect on both predictions. For the salt water I originally thought the regular water would freeze faster. After doing the experiment I learned my prediction was correct.