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Learn more about factors that affect the chemical nature of substances.
The amount of energy required to change the state of a substance depends on how strong or weak the bonds between the molecules are. For substances with strong bonds at standard temperature and pressure, like diamonds, it is extremely difficult to separate the molecules, whereas substances with weak bonds, like helium, remain in a gaseous form and do not condense into liquid or solid states. In this free online chemistry course you learn more about factors that affect the chemical nature of substances. You will learn why substances changing state can also be affected by mixing substances together. The course explains about using water as a solvent and mixing in different substances to see the effect on the boiling and melting points of the solution. This is followed by step by step examples of working out what the change in boiling or melting point will be based on the amount of solute added. This chemistry course will be of great interest to all students who wish to pursue a career in any of the sciences such as chemistry, physics, biology or geology, or the individual learner who simply wants to learn more about factors that affect the chemical nature of substances.
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