Homogeneous and Heterogeneous Substances!

In today’s class, Mr. Dockor had briefly gone over a few of the balancing word equations from our homework that’s due next class. After that we had moved on to how we name matter helps us understand it. We learnt that matter can be divided into 2 types, Homogeneous Substances and Heterogeneous Substances. The two types of matter can also be broken further down into smaller groups such as pure substances, elements, compounds, mixtures, solutions and such displayed in the diagram below. Near the end of the class we also saw an example of how a mixture can be separated.

Homogeneous: consists of only one visible component (eg. distilled water, oxygen, graphite)

Heterogeneous: contains more than one visible component (chocolate chip cookie, granite)

2 types of pure substances:

Elements- substances that can’t be broken down into simpler substances by chemical reactions (any element)

Compounds- 2 or more elements that can be changed into other compounds by chemical reactions. (Water, sugar)

Solution- a homogeneous mixture of 2 or more substances (Fog, Steel)
-the component present is greater amounts is the solvent and in smaller amounts is the solute.

Mixtures- heterogeneous mixtures have different parts to it that is clearly visible (blood, sand)
- 5 different ways to separate mixtures
- by hand
- filtration
- distillation
- crystallization
- chromatography