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Chemistry - The Nature of Substances


Chemistry - The Nature of Substances

Chemistry - The Nature of Substances

Learn more about factors that affect the chemical nature of substances.


Students: 468
Course Description

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.
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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 free online 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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Certification

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Learning Outcomes

Learning outcomes: - Understand how bond strength affects state change; - Learn about the different types of bonds; - Learn about the different types of suspension - See how a solute can change the boiling and freezing points of a solvent; - Understand how vapour pressure affects evaporation and condensation.


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Module Title
Module 1: Understanding Factors that Affect the Chemical Nature of Substances
Module 2: Understanding Factors that Affect the Chemical Nature of Substances Assessment

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Background  
Course Rating (By Learners)
Course Title Chemistry - The Nature of Substances
Course # 505
Course Publisher Khan Academy
Course Category 85
Content Origin
Course Description  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 free online 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.
License  This course is available from Khan Academy OpenCourseWare through the following Creative Commons licence:
Creative Commons License
Release Date 07 November 2012
   
Content  
Course Duration (Avg Learner) 1-2 Hours
Video/Audio High
Audio Only High
Animation None
Assessments Yes
 
Education Level
Age appropriateness 18+ Years
Minimum Grade/Class Level Higher High Secondary School
 
Validation Level 5
ALISON Testing Yes
Certification Availability
PDF Download Yes
Parchment Yes
Framed Certification Yes
   
Merchandise Availability
Marketing Information
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Free, Online Chemistry - The Nature of Substances Course.