M.T+Study+guide+Dissovled+oxygen

=Project Search Study Guide= Water Test: Dissolved Oxygen

1.) How does dissolved oxygen get into the water? Diffusion through the air into the water by photosynthesis through the plants.

2.) Why is it important to the ecosystem? Dissolved oxygen is important to the aquatic animals for they could breathe.

3.) How do humans impact the levels of Dissolved Oxygen? By the recklessness of harmful chemicals and sewage waste.

4.) What does it mean to fix the oxygen? Why did we need to do this? It means to keep the oxygen contain in the bottle. So we wont have extra oxygen diffusion.

5.) What are some of the precautions you need to take in this lab? The precautions are to wear safety goggles and gloves.

6.) What is titration? Your slowly adding a liquid to another liquid.

7.) How do you read a direct reading titrator? From the bottom of the plunger and each division is 2.2.