Dissolving Solution

Aim

To investigate the solubility of Calcium Chloride and Magnesium Oxide to see which is the most soluble in water.

Equipment

-A 250ml Beaker

-100ml Measuring Cylinder

-Calcium Chloride

-Magnesium Oxide

-A Stirring Rod

-A Spatula

Method

-Fill the Beaker with 100ml of tap water

-Add a bit Calcium Chloride by using a Spatula

-Stir the solution until all of the Calcium Chloride has dissolved

-Repeat steps 2 and 3 until no more Calcium Chloride will dissolve into the solution

-Records with how many Calcium Chloride you added with the spatula.
-Repeats the experiment, with Magnesium Oxide

Results

Solute

-Calcium Chloride-2

-Magnesium Oxide-6

Discussion 

-It took really long to dissolve Calcium Chloride.

-It took less time to dissolve magnesium Oxide and more to dissolve.

Dilution

Aim

I want to investigate how to dilute a solution.

Equipment

-Test Tube Rack.
-Test Tubes.
-100ml Measuring Cylinder.
-Dropper.

Method

-Fill measuring cylinder with 10ml of water.

-Add 10ml of water into a test tube.

-Add 5ml of water to 5 more test tubes.

-Add a small spatula of Potassium Permanganate to the first 10ml  test tube of water.

-Add 5ml of the water mix with the chemical from the first test tube into the measuring cylinder.

-After that add the 5ml of water mix with the chemical into the second test tube.

-Repeat to the remaining 4 test tubes.

Results

Discussion

-The first test tube went dark purple.

-As we poured 5ml from each test tube into the next test tube, the colour became lighter and lighter.

Separating Mixtures

Aim

To separate a solution from a precipitate (precipitate is the name for a solid that forms in a liquid during a chemical reaction)

Equipment

-Lead II nitrate 

-Potassium iodide

-Stirring rod 

-A 10ml beaker

-A funnel 

-Filter paper

Method

1.) Pour approximately 10 ml of Lead II Nitrate into a beaker

2.)Add the same volume of Potassium Iodide. A precipitation reaction will occur, resulting in a cloudy yellow precipitate of Potassium Nitrate

3.)Your science teacher will show you how to fold the filter paper so it fits inside your funnel

4.)Place the funnel, with the filter paper inside it, into the mouth of a conical flask.

5.)Stir, then carefully pour the precipitate mixture into the funnel.

Observation

Outline what you saw happen

When I pour the Potassium Nitrate (mixtures of Lead II Nitrate and Potassium Iodide) it filtered through a clear liquid into the Conical Flask.

Discussion

-When I mix the two chemicals it went cloudy yellow.
-When I filtered the chemicals through the filter paper it prevented the yellow bits to come through.

-A clear liquid filtered through.