The mixtures and compounds around you.

The world around us is made up of many particles. Sometimes, these particles come together and make mixtures and compounds. Mixtures are two or more substances that combine physically; an example of this is a fruit salad. On the other hand, a compound is two or more substances that combine chemically but not physically. A perfect example for a compound is water.

Figure 1: Fruit salad

  

  There are many different types of mixtures but, they are all made up of two or more substances that are physically combined and the substances still retain their original chemical properties. The  two different types of mixtures that you will hear a lot about are homogenous and heterogeneous mixtures. A homogenous mixture is where the substances are evenly spread throughout the mixture; an example of this is salt water. In heterogeneous mixtures, the substances are not spread evenly throughout the mixture; an example of this is sand in a bottle of water that has been shaken up.

Figure 2: Jar of sand water

Figure 3: Glass of salt water

                     
 Compounds are created when two or more elements chemically combine to form a different substance.  The substances in the compound do not retain the same original properties that they started out with and can be very hard to break apart. An example of this is table salt. The to substances that create table salt are green chlorine gas and sodium. Both are deadly to life by themselves, but combined make table salt with is important to the survival of most life. 

Figure 4: Table salt



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