De monstration Worksheet Today you will be going to eight different stations. Fo

Question

De monstration Worksheet Today you will be going to eight different stations. Four of the stations will have to perform the experiment or write down an observation. :f you start in an area without an experiment, you will answer the questions on this sheet. The work sheet will be due at the end of the class. Pre questions #1 1. What happen if you use two filter papers instead of one to filter a solution? One t 2. What happens if you don't wait long enough before you filter the mixture? 3. How would you speed up filtration? Station 1: Filtration Draw the demonstration of filtration onto the paper. Have one person choose a beaker and filter out the mixture. Fill the beaker up with water and fiiter anything left. There should a number in the mixture. Write the number down here: 1. What is left on the filter paper? 2. What went through the filter pape 3. How would I separate the rest of the solution?

Explanation / Answer

Pre question #1 :

1. If we to use two filter paper instead of one, the filtration speed would reduce drastically.

2. If we did not use long enough before begining filtration, the solid (crystals) would not have settled and filtration would be slower.

3. To increase the speed of filtration we must use flutted filter paper or in some we may employ aspirators for faster filtration.

Station 1 : Filtration

1. After filtration, solid residue is left on the filter paper.

2. The liquid that is passed through the filter paper is known as filtrate. It is homogeneous solution

3. The remaining solution may again be heated with the solvent and filtertered again till most of the solid has gone in solution.

Pre question #2 :

1. Super saturated refers to a solution which has the amount of solute higher than it can dissolve and form a homogeneous solution. Some part of solute remains in an undissilved state.

2. Saturated solution is one where all the solute added has dissolved in solution and no more solute will dissolve in it.

3. Unsaturated solution wherein, additional amount of solute may be dissolved when added to the solution. the solution has not reached the state of satruation.

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