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Chemistry - Molecules and their Composition


Chemistry - Molecules and their Composition
Chemistry - Molecules and their Composition

Learn more about molecules and their composition.


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Chemistry - Molecules and their Composition Course
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Course Description

A molecule is a group of two or more atoms that bind together using chemical bonds. They may be from one or multiple elements and it is the ratio, or mass composition, of each molecule that gives the molecular compound its chemical characteristics. In this free online science course, you will learn about molecules and how they are composed of various elements, in mass, atoms and ratios. The course introduces the student to Avogadro’s number or the Mole, which is used to convert between atomic mass and grams, so that you will be able to work out ratios and weights of molecules. You will also learn how to balance chemical equations, and by balancing the reactants within equations, get viable chemical reactions. This branch of chemistry is known as Stoichiometry. The 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 and understand how atoms form the molecules which make up all the material surrounding us.

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Learning Outcomes

Learning Outcomes: - Understand the empirical, molecular and structural formulas; - Use the Periodic Table and the amu to work out weights and ratios; - Convert between Avogadro’s number (moles) and grams; - Derive the empirical structure from mass composition; - Balance an chemical equation.


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Course Rating (By Learners): 4 stars based on 22 reviews
Course Title: Chemistry - Molecules and their Composition
Course #: 478
Course Publisher: Khan Academy
Course Category: 85
Content Origin:
Course Description: A molecule is a group of two or more atoms that bind together using chemical bonds. They may be from one or multiple elements and it is the ratio, or mass composition, of each molecule that gives the molecular compound its chemical characteristics. In this free online science course, you will learn about molecules and how they are composed of various elements, in mass, atoms and ratios. The course introduces the student to Avogadro’s number or the Mole, which is used to convert between atomic mass and grams, so that you will be able to work out ratios and weights of molecules. You will also learn how to balance chemical equations, and by balancing the reactants within equations, get viable chemical reactions. This branch of chemistry is known as Stoichiometry. The 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 and understand how atoms form the molecules which make up all the material surrounding us.
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): 2-3 Hours
Video/Audio: High
Audio Only: High
Animation: None
Assessments: Yes
Education Level
Age appropriateness: 16+ Years
Minimum Grade/Class Level: Post-Secondary
Validation: Level 3
ALISON Testing: Yes
Certification Availability
PDF Download: Yes
Parchment: Yes
Framed Certification: Yes

Study for Free at Your Own Pace! Start This Course

  • Tony Otis
    Tony Otis Canada Great Course! 2015-02-21 00:02:13
  • Ahmad Muhammad
    Ahmad Muhammad Iraq As you know chemistry is king of science. Actually it was such an interesting subject and it was so helpful. 2014-10-18 13:10:44
  • Shelby Cruz
    Shelby Cruz United States of America Very good course! I learned what I needed to know and was challenged. 2014-09-25 19:09:24
  • Ildiko Marias
    Ildiko Marias Serbia It is not that hard. 2014-08-28 13:08:47
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Study for Free at Your Own Pace! Start This Course

Free, Online Chemistry - Molecules and their Composition Course.