Distillation

Aim: To separate a solute from a solvent in a solution using distillation

Equipment: A solution of coke conical flask, heat proof mat, a delivery tube and bung,  Bunsen                             burner, tripod, gauze mat, retort stand, boss head and clamp, boiling tube.



Method: 1. Set up the equipment as shown in the diagram.

               2.  Add approximately 50ml of coke to your conical flask.

               3. Light your Bunsen burner. Open the air hole and gently push the Bunsen burner under                      the  tripod

               4. Heat the solution until most of the solvent has been evaporated. turn off your Bunsen                        burner

Making a Dilution

Aim: To make a dilution series to investigate concentration.

Equipment: A potassium permanganate crystal, six large test tunes, tweezers, a plastic                            transfer pipette, a test tube rack, 10 mL measuring cylinder. 

Method 

1. Place the six test tubes in a test tube a rack, Label the rack numbers 1 too six 

  2. Using the measuring cylinder fill tube one with ten ml of water fill the remaining                 test tube with 5ml water 

3. Using your tweezers add a single crystal of potassium permanganate too test                      tube 1 

 4. Gently shake the test tube until the crystal has dissolved.

  5. Using the transfer pipette, carefully remove exactly 5ml from test tube one and                   pour it into   test tube 2 

  6. rinse the transfer pipette thoroughly to ensure that no purple solution remains 

 7. Gently shake test tube 2 and repeat the transfer process transferring exactly 5 ml 

             of solution from test tube 2 to test tube 3 

  

8. Rinse the pipette again and repeat the transfer process for test tube 4 5 6 


Here is Our results: 

We were seeing how much water does it take too turn light purple 

Discussion: It got lighter every time we added a small amount of it. 

Social Studies

Social Studies

What you have done or been working on?
Me and Ashley have been in the Cook island/Maori group we have been learning different things in our culture.We also helped making the slide so that our work would be completed on time.Yesterday we presented our work And we both talked about our slide in front off everybody.

What have you learnt about your cultural group?
That we all have different appinions on different things and that we all like the foods and I also learnt about different culture groups in class.

Investigating Solublilty

Aim : To investigate the solubility of baking soda (sodium hydrogen carbonate) and table sait (sodium chloride) to see which is the most soluble in water.

Equipment : A 250 mL beaker, 100 mL measuring cylinder, sait, baking soda, a stirring rod, a teaspoon and a ruler

Method : 

1. Fill the beaker with 100 mL of tap water

2. Add a level teaspoon of baking soda. A level teaspoon is obtained by running your ruler across the edges of the tablespoon) .

3. Stir the solution until all of the baking soda has dissolve.

4. Repeat steps 2 and 3 until no more baking soda will dissolve into the solution.

5. Record how many teaspoons of baking soda were added

6. Repeat the experiment, with the table sait


Results: Baking soda, About 4 teaspoon til it wont dissolve.
               Sait 3 teaspoons til it wont dissolve
Sait - 3
Baking Soda - 4
Copper Oxide - Nothing doesn't dissolve