9/17/12 Lab - Building

Today in class we built structures -

 

This is Water, H2O

This is oxygen, O.

This is carbon dioxide.

This is carboxylic acide, -COOH

This is Amino, -NH2

This is a peptide bond, it is amino acid and carboxylic acid put together. Page 49 in textbook.

This is Glucose, sugar. it is on page 40 in the textbook.

This is what glucose looks like in the book.

This is Phospholipid, it regulates what goes in and out of a cell.

The polar head side likes water and the Fatty Acid tail (the 2 strains) are hydrophobic- they hate water.

 

9/12/12 pH lab- measuring the different chemicals

Today in lab we measured the pH of 13 different chemicals

We used a pH meter and pH paper.

We wrote down the answers from the meter, paper, the average and if it was an Acid, Base or Nuetral.

we have H2O, Buffer, Ammonia, and Vinegar.

 

• H2O- Meter 6, Paper 4.5, Average 5.5. It is Acid.
• Buffer- Meter 7.2, Paper 7, Average 7.1. It is a Nuetral.
• Vinegar- Meter 3.2, Paper 3, Average 3.1. It is an Acid.
• Ammonia- Meter 10.9, Paper 10, Average 10.2. It is a Base

 

We have Baking Soda, Bleach and Coke.

 

 

We also have Diet coke, and lemon with low concentration.

 

• Baking Soda- Meter 8.1, Paper 8, Average 8.1. It is a Base.
• Bleach- Meter 4.5, Paper N/A, Average N/A. It is an Acid.
• Coke- Meter 3, Paper 3, Average 3. It is an Acid.
• Diet Coke- Meter 3.4, Paper 3, Average 3.2. It is an Acid.
• Lemon low concentration- Meter 3.3, Paper 3, Average 3.2. It is an Acid.

We have Lemon Juice, Coffee, Rolaid and Detergent

 

 
• Lemon Juice- Meter 2.9, Paper 2, Average 2.5. It is an Acid.
• Coffee- Meter 6.0, Paper 4.5, Average 5.3. It is an Acid.
• Rolaid- Meter 4.6, Paper 5.5, Average 5.05. It is an Acid.
• Detergent- Meter 11.3, Paper 11.5, Average 11.4. It is a Base.

 

 

 

 

 

 

 

9/12/12 pH Lab - changing the color of H2O

In our lab groups we measured the pH of different chemicals.

Every move you make is a multiple of 10.

We took a beaker and filled it with 30 ml of tap water and put 10 drops of blue dye in it.

Which gave it a pH of 7.6

With a straw we blew into the beaker and changed the color from blue to yellow which also changed the pH to 6.0

 

 

 

We changed it from Basic to Acidic with our breath .

Increased the Hydrogen to 1000 pH concentrated.

 

 

Our breath blows out Carbon, water is an Acid. So the solution is Carbon Acidic

 

9/10/12 Rat

Rat - Body organs

 

Beginning - rat and peeling the skin, Female Rat

Naming organs - Male Rat

 

Female Rat - Organs , Rib cage is out, can see the heart and lungs.

Female rat - skin is tacked to the side, rib cage is out

 

Female rat- Kidney is dyed RED on both sides, under the small and large intestine

Male rat

Male rat-

Male rat - pointing at testicle