Read the statement/questions carefully, then write your answer on the space provided .
1. Are mixtures important?why?
2.in your home, give (3) three examples of useful mixture .
3.in your community, give (3) three examples of mixtures that harm the environment
4.there are three types of homogeneous mixtures cement which is the source of building materials for construction is an example of _______________.
5.the two forms of heterogeneous are __________.
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Answer:
1.Mixtures are just as important as elements, compounds or alloys. In fact, the air that you are breathing right now is a mixture of oxygen, nitrogen and some lesser gases! Mixtures are used in many processes, including steel manufacturing, the chemical industry and many others.
2.Sugar and salt.
Ethanol in water.
Air.
3.Smoke and fog (Smog)
Dirt and water (Mud)
Sand, water and gravel (Cement)
4.Cement - a solid homogeneous mixture of calcium compounds; mixed with sand, gravel and water, it becomes the heterogeneous mixture concrete, one of the most important building materials in the world.
5.The two types of heterogeneous mixtures are suspensions and colloids.