Separation: Mixture and Ml Beaker Funnel

Separation of Iron, Salt and Sand

Separating a mixture is an example of a physical change. There are several ways to separate a mixture. The use of one's hands in pulling the parts of a mixture apart is one example. Filtration is another way to separate mixtures. Filtration is the separation of a heterogeneous (not alike, different) mixtures, by adding a solvent and passing the resulting mixture through a fine mesh or filter. Evaporation of a homogeneous (alike, same) mixture will reveal any solid particles which were dissolved in the original mixture.

Materials:

iron filings sand salt water magnet hot plate filter paper 50 mL & 100 mL beaker funnel tongs

Directions:

1. Combine 1 g of iron filings, 1 g of salt and 1 g of sand in a petri dish.

2. By using a magnet remove the iron filings.

3. Place the mixture which contains salt and sand in a 100 mL beaker.

4. Add 50 mL of water to the mixture.

5. By using filter paper and a funnel separate the sand from the mixture. The sand will be left on the filter paper, leaving a mixture of salt and water.

6. Using a hot plate bring the salt and water to a boil. Continue boiling while decreasing heat until almost all of the water has evaporated.

7. Using tongs remove the beaker from the hot plate and place it on a hot pad.

8. The salt will be left at the bottom of the beaker.

Questions:

1. What is a mixture?

2. What other ways could you of separated the mixture?

3. What substance was the easiest to remove from this mixture? Why?

Separation of Iron, Salt and Sand

Separating a mixture is an example of a physical change. There are several ways to separate a mixture. The use of one's hands in pulling the parts of a mixture apart is one example. Filtration is another way to separate mixtures. Filtration is the separation of a heterogeneous (not alike, different) mixtures, by adding a solvent and passing the resulting mixture through a fine mesh or filter. Evaporation of a homogeneous (alike, same) mixture will reveal any solid particles which were dissolved in the original mixture.

Materials:

iron filings sand salt water magnet hot plate filter paper 50 mL & 100 mL beaker funnel tongs

Directions:

Separate into three separate piles a mixture which contains iron, salt and sand.

Questions:

1. What is a mixture?

2. Write a procedure for separating each of the components of the mixture.

3. What substance was the easiest to remove from this mixture? Why?