Growing Snow

In this experiment my partner and I added salt to water and put it into one cup and put fresh water into another and we had the polymer in 2 plates and we added salt water to one of the plates and put fresh water into one.

Hypothesis:

Salt water would make the polymer grow slower than the fresh water because salt water can have negative influences on things. 

What I Used:

For this experiment my partner and I used the growing snow (polymer), 7.3 grams of salt, 2 stopwatches, Four plastic cups two for the polymer, one for salt water, and one for the fresh water. Lastly I needed the triple beam balance to measure the amount of salt.

Experiment:

To start this experiment I had to gather all the things which were: polymer, 7.3 grams of salt, 2 stopwatches, Four plastic cups two for the polymer, one for salt water, and one for the fresh water. Then I had to put the put the polymer into 2 of the plastic cups. then I put another 2 cups on the table and put water in them both. I took a cup and put salt in it and I measured the weight of that which was 7.3 grams. Then I put it in the cup with the water and stirred it up. Then I put all of it in one of the polymer. I started the stop watch as soon as my partner put the water in the polymer and at when the polymer stopped growing I saw that the salt water made it grow at the time of 1 minute 10 seconds. Then I put the polymer aside and took the other polymer and the fresh water. My partner put the fresh water into the polymer and waited for it to grow. Then I saw that fresh water grew completely in 10 seconds. I recorded all the seconds and the minutes.

Record/Analyze:

The salt water polymer grew in 1.10 second while the fresh water polymer grew in 10 seconds. I put 7.3 grams in the fresh water to make it salt water. I recorded the time it took for it to grow and then I made sure to record the time accurately. Then I could record the other one and how much it took for the fresh water to grow polymer. The fresh water made the polymer grow faster.

Experiments table results:

The Table:

	Salt water	Fresh water
Seconds	1:10 minutes	10 seconds

Conclusion:

I found that my hypothesis was correct and fresh water did make the polymer grow faster than the salt water. I found this intresting because anything could happen in this experiment. I was 70% sure that my hypothesis but there was still 30% chance that it could have been wrong. To make this experiment more accurate my partner and I could have made sure to do a few more trials.

Reflection: 

I found this experiment very fun and interesting. If I could do another experiment with polymer it would be: Does Nestea or Vinegar make the polymer grow more?