Thursday, May 30, 2013

e-Portfolio


For our procedure, we first got a test tube. We placed two chemicals in the test tube and mixed it together with a glass rod. We repeated that for each new chemical and wrote the observations in the data table. We got a Bunsen burner to burn methane and oxygen. We continued to record that in the data table. After we were finished with each mixture, we cleaned everything up.
Calcium has a white appearance, and it is soluble in water. Its hazards are ingestion, inhaled, or irritation to the skin and eyes. Hydrochloric acid is a colorless, fuming liquid, and it is also soluble in water. Though, it has a hazard of poison. Next is zinc, and its appearance is a grey-blue powder, but it is not soluble in water. Zinc is hazardous if it is swallowed. Lead nitrate is a colorless crystals that is soluble in water. It is fatal if it is swallowed. Calcium oxide looks like white powder that is also soluble in water with heat, and can cause irritation. Then there’s magnesium carbonate which looks like white crystals. It is soluble in water and causes irritation. Methane is colorless and odorless. It is soluble in water, but it is also flammable. Silver nitrate is also colorless, and it dissolves in water. Though, it can cause abdominal pain. Sodium chloride is a white crystalline powder that is also odorless. It can dissolved in water, glycerol, and slightly in alcohol; and it causes irritation and dehydration. Ammonium chloride is white, hygroscopic crystals. It is soluble in water, glycerol and alcohol. It too can also cause irritation. Sodium hydroxide is colorless and odorless. It is also toxic and corrosive.
In this lab there were a few chemicals. For the first one, we used calcium and hydrochloric acid. It dissolved, and the rock-like substance became smaller than it was. The next one we did was zinc metal and lead nitrate. It did dissolve, but very slowly. There was no immediate reaction, the magnetic reaction later made it puff up. Thirdly, it was magnesium carbonate. It dissolved and the water turned light blue. Then there was methane and oxygen, which caught on fire. Sixth was silver nitrate and sodium chloride. It dissolved, and turned into a milk-like color. Last was ammonium chloride and sodium hydroxide. It dissolved, and then there was slowly basely noticeable bubbles.

No comments:

Post a Comment