{
Loading

Chemistry - The Nature of Substances

Learn more about the factors that affect the chemical nature of substances with this chemistry course.

Chemistry
Free Course
This free online chemistry course will teach you about the nature of substances. You will learn that the amount of energy required to change the state of a substance depends on how strong or weak the bonds between the molecules are, study the factors that affect the chemical nature of substances, learn why the substances' changing state can also be affected by mixing them together, and more. Click to start this free online chemistry course now!
  • Duration

    1-2 Hours
  • Assessment

    Yes
  • Certification

    Yes
  • Publisher

    Khan Academy

Description

Modules

Outcome

Certification

View course modules

Description

This course begins by discussing the factors that affect the chemical nature of substances. You will study Van Der Waals Forces which are the class of all of the intermolecular forces that are not covalent bonds nor ionic bonds. You will also look into covalent networks which are the strongest intermolecular forces or structures of elements, metallic crystals which are made of metal elements with atoms arranged in similar patterns, and ionic crystals which grow from ionic bonds and are held together by electrostatic attraction.

You will then look into vapour pressure which is caused by the evaporation of liquids and study the three common factors that influence vapour pressure. This course will also discuss suspensions, colloids, and solutions. You will also study solubility which is the ability of a given substance to dissolve in a solvent, the boiling point elevation which is when the boiling point of a solution exceeds that of the solvent, and freezing point depression which is the decrease of the freezing point of a solvent on the addition of a non-volatile solute.

Substances with strong bonds at standard temperature and pressure, like diamonds, have molecules that are extremely difficult to separate, whereas substances with weak bonds, like helium, remain in a gaseous form and do not condense into liquid or solid states. Upon the completion of this course, you learn more about how bond strength affects state change, the different types of bonds, and the different types of suspension. Sign up now and learn more about factors that affect the chemical nature of substances.

Start Course Now

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.

Certification

All Alison courses are free to enrol, study and complete. To successfully complete this Certificate course and become an Alison Graduate, you need to achieve 80% or higher in each course assessment. Once you have completed this Certificate course, you have the option to acquire an official Certificate, which is a great way to share your achievement with the world. Your Alison Certificate is:

Ideal for sharing with potential employers - include it in your CV, professional social media profiles and job applications
An indication of your commitment to continuously learn, upskill and achieve high results
An incentive for you to continue empowering yourself through lifelong learning

Alison offers 3 types of Certificates for completed Certificate courses:

Digital Certificate - a downloadable Certificate in PDF format, immediately available to you when you complete your purchase
Certificate - a physical version of your officially branded and security-marked Certificate, posted to you with FREE shipping
Framed Certificate - a physical version of your officially branded and security-marked Certificate in a stylish frame, posted to you with FREE shipping

All Certificates are available to purchase through the Alison Shop. For more information on purchasing Alison Certificates, please visit our FAQs. If you decide not to purchase your Alison Certificate, you can still demonstrate your achievement by sharing your Learner Record or Learner Achievement Verification, both of which are accessible from your Dashboard. For more details on our Certificate pricing, please visit our Pricing Page.

Careers

    Notification

    You have received a new notification

    Click here to view them all