gangzters+girls

Hi this is Dianys Mendez And Katrina Horton

Does temperature affect the dissolve oxygen in water?

Our project has do to with dissolve oxygen testing on water in different temperature and all we want to know if it affect the ammount of dissolve oxygen.

Dissolve Oxygen is always going to stay normal. The temperature is not going to get affected as much. Changes in the dissolve oxygen might affect the life of organisms.
 * Material:**
 * Dissolve oxygen test kit
 * West Roxbury Educatonal Complex pond water
 * Gloves
 * Goggles
 * Procedures:**
 * 1) Filled up water sample all the way to the top making sure there was no bubbles.
 * 2) Put 8 drops chemical called manganous sulfate to water sample bottle
 * 3) 8 drops of alkaline in to sample water bottle
 * 4) put cap on bottle to sampling bottle and turn it upside down three times.
 * 5) watch a light brown solid from (the solid is called precipitate)
 * 6) wait untill it settles.
 * 7) add 8 drops of sulfuric acid to the samplling bottle
 * 8) cap the bottle and shake it until the precipate dissolves
 * 9) pour 20ml to titration tube
 * 10) add 8 drops of starch indicator solution to the titration tude gently swirl to mix
 * 11) cover the tiration tube with a cap with a hole in the middle
 * 12) put sodium thiosulfate and look for any bubbles.
 * 13) keep repreating step untill it gets clear.
 * Hypothesis:**


 * Data:**

Temperature doesn't really affect the amount of dissolve oxygen, if it did affect dissolve oxygen organisms wouldn't be able to live.
 * Conclusion:**

Dianys Mendez Katrina Horton
 * Acknowlegment:**