Lab reports

Lab reports:

Sour food:

First, make a numbered cup for each food bottle. Then add 5 drops of each food to its own numbered cup. Then add a drop of dye to each cup of food. There are light green, grass green, orange, yellow and blue each numbered from 1 to 5. Each color of the dye shows the concentration of loose hydrogen atoms in the food. The orange, yellow shows the food with a high concentration of loose hydrogen atoms is the sourest. Then, a light green show is the middle sour. Grass green and blues show the food with a low concentration of loose hydrogen atoms is the least sour. The orange color can be the lemon juice, the yellow color can be vinegar, the light green can be orange juice and grass green can be milk and the last blue can be water. The different food has different taste of sour because of the consistence of acids and bases and PH change.

Questions:

1. What are acids and bases?

-Acid: a substance that produced Hydrogen ion in water solution. The hydrogen ions were hydrated as Hydronium ions.
Base: a substance that produced Hydroxide ion in water solution.

2. What is a molecule?

- A molecule is the smallest particle in a chemical element or compound that has the chemical

properties of that element or compound.

3. Why is pH important in the ocean?

- Most organisms are live in the ocean need a pH solution between 5.0 and 9.0. The chemical components in seawater can make change to PH. If the PH is lower this will effect to animals which conclude corals, mollusks and crustaceans. Most of organisms live in the water dependent on calcium carbonate, increase acidity threatens their survival. PH with calcium carbonate is very important for organisms like corals, mollusks and crustaceans that make shells. PH is important because it can be a part of reason causes the sea organism decreases or increases with the high and low levels.

4. What is an ion?

- An ion is an atom or group of bonded atoms which have lost or gained one or more electrons, making them negatively or positively charged. Bread hole:

First, add three scoops of yeast to the tube. Second, add 3 scoops of sugar to the tube, because sugar is food for the yeast. Third, fill the tube three fourths full with warm water. Fourth, use the stick to stir the yeast and sugar into the water, keep stirring until the water is the same color as the yeast and wait for about one hour. Use the flashlight on the side of the tube then you can see very small and tiny bubbles streaming up the side of the tube. The reason is that the yeast is a living thing that feeds and also breaks sugar molecules apart to a new molecule. The carbon dioxide gas molecules make tiny bubbles. That is the reason why we can see the bread with hole because when the bubbles get baked and it will broken to a hole.

Questions:
1. What gas causes the bubbles?

-Trapped air and argon gas cause bubbles.

2. How was the gas produced?

- Gas is produced by the anaerobic decay of non-fossil organic material, which is just as swamps, landfills, and marshes.

3. How does CO2 get in the ocean?

- CO2 is absorbed by the tiny ocean plants (Phytoplankton) because these plants need get iron from carbon dioxide.