Separation of mixtures Computational Logical Thinking Project

INTRODUCTION

All mixtures can be separated by using some physical property. No chemical changes need be performed, so the substance will keep its chemical character while the separation process takes place. The substances present in a mixture can be separated using different methods, depending on the type of mixture.

Separations differ in chemical or physical properties such as size, shape, mass, and density, between the components of a mixture. Methods are classified according to the particular properties they are based on to achieve separation.

The more different the properties are, the easier it is to separate the substances.

SCRATCH 1 --> https://scratch.mit.edu/projects/130007861/

problem statement

The experiment in which we’ll observe the separation of mixtures is using magnetism to extract iron from cereal with water so, from what brand of cereal will more iron be obtained?

PROCEDURE

1. Cut the plastic bottle in halves.

2. Tape the magnet in the outside of the plastic bottle.

3. Use the scale and weight 350g of both cereals.

4. Put the cereal in the blender and wait till the cereal its completely pulverized.

5. Mix the cereal with water in a bowl.

6. Place the mixture through the bottle for the iron to stick to the magnet. (Wait for the iron to dry)

7. Repeat the process with both cereals.

SCRATCH 2 --> https://scratch.mit.edu/projects/131018669/

Variables

hypothesis

As a hypothesis we state that more amount of iron will be extracted from the cereal “Cheerios”. We state as the independent variable the 2 types of cereals that will be use. On the other hand, the dependent variable will be the amount of iron obtain from each cereal and finally the controlled variables will be the amount of cereal that we will use in each trial, since we will always use the same amount and also the amount of water that will be mixed with the cereal.

Filtration

SCRATCH 3 --> https://scratch.mit.edu/projects/130704242/

Magnetization

SCRATCH 4 --> https://scratch.mit.edu/projects/130412505/

Results and observations

OBSERVATIONS

- The first time we made the experiment it failed.

- The Special K extract fewer amount of iron because the percentage of it was less.

- The results never gave an exact amount but they were between the range.

- The iron moved along with the magnet.

- We try to weight the iron extracted but the quantity was too small.

SCRATCH 5 --> https://scratch.mit.edu/projects/130061077/

conclusion

After performing the experiment we find out that our hypothesis was correct because there was more iron extracted from Cheerios than from Special K. The more percentage of iron in the cereal the more iron that will be extracted.

With this project we found out that there exist several methods for separating mixtures, but we focus on magnetization. We discovered that the amount extracted from Special K. was almost half of the amount extracted from Cheerios.

After getting the result of the project we research more information about Cheerios and we realized that it is located in the ranking of the cereals with more percentage of iron, this affect our result because obviously the more percentage of iron the more that will be extracted. The form of both cereals is something that we didn’t considered, it may also affect because in Cheerios the particles are more concentrated than in Special K.

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