Khan Academy
Khan Academy: Relationship Between Ka and Kb
Learn about the relationship between Ka of a weak acid and Kb for its conjugate base. Practice equations for converting between Ka and Kb, and converting between pKa and pKb.
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Khan Academy: Heat and Temperature
An explanation of using heat capacity to calculate heat.
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Khan Academy: Pressure Volume Work
Work, in regards to thermodynamics, is defined and calculated using the expansion and contraction of gasses.
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Khan Academy: Bond Enthalpy and Enthalpy of Reaction
Explanation of bond enthalpy that includes examples of calculating enthalpies of reaction using bond enthalpy.
Khan Academy
Khan Academy: Gibbs Free Energy and Spontaneity
Explanation of Gibbs Free Energy and Spontaneity. Includes formulas and examples.
Khan Academy
Khan Academy: Reaction Mechanisms
A complete definition of reaction mechanism, intermediates, and rate limiting step can be found here. Understand how to evaluate a proposed reaction mechanism using the rate law. Find practice questions and check comprehension.
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Khan Academy: Types of Catalysts
What is a catalyst? This Khan Academy resource includes examples of enzymes, acid-base catalysis, and heterogeneous (or surface) catalysis.
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Khan Academy: Biology: Intro to Biology: Preparing to Study Biology
This article list some fundamental topics for students to review over before studying biology.
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Khan Academy: Biology: Intro to Biology: What Is Life?
This article explores exactly what is considered alive but reviewing over the characteristics of life.
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Khan Academy: Biology: The Scientific Method
Learn how you can test a hypothesis with the scientific method by reading this article.
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Khan Academy: Biology: Controlled Experiments
An article that explores how scientist conduct controlled experiments to test hypotheses.
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Khan Academy: Biology: Chemistry of Life: Matter, Elements, and Atoms
Did you know matter is made up of atoms? In this article learn about the smallest unit of matter called the atom.
Khan Academy
Khan Academy: Biology: Chemistry of Life: Atomic Number,atomic Mass,and Isotopes
Learn the fundamental properties of atoms in this article. Understand the definition of atomic number, atomic mass, and isotopes. [6 min, 50 sec]
Khan Academy
Khan Academy: Biology: Chemistry of Life: Chemical Bonds
Review over covalent, hydrogen, and ionic bonding in this article. Learn how molecules are held together by chemical bonds.
Khan Academy
Khan Academy: Biology: Chemistry of Life: Chemical Reactions
An article discussing how chemical reactions make and break bonds between atoms.
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Khan Academy: Biology: Water, Acids, and Bases: Hydrogen Bonds in Water
Investigate why water properties make it unique and good at supporting life in this article. Learn about the life-sustaining properties of water that are caused by the hydrogen bonds that it forms.
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Khan Academy: Biology: Water, Acids, and Bases: Solvent Properties of Water
An article investigating why water makes a good solvent. Also, understand what molecules dissolve best in water.
Khan Academy
Khan Academy: Biology: Water, Acids, and Bases: Cohesion and Adhesion of Water
This article defines and discusses cohesion and adhesion. Understand these two topics and their importance in hydrogen bonding.
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Khan Academy: Biology: Specific Heat, Heat of Vaporization, and Density of Water
Why does ice float? In this article answer that question by learning about the topics of Specific heat capacity, evaporative cooling, and heat of vaporization of water.
Khan Academy
Khan Academy: Biology: Water, Acids, and Bases: Acids, Bases, P H, and Buffers
Learn the basics of acids, bases, proton concentration, the pH scale, and buffers in this article.
Khan Academy
Khan Academy: Biology: Properties of Carbon: Hydrocarbon Structures and Isomers
This article reviews over the diversity that exists with the structure of hydrocarbons. Learn about structural isomers, cis/trans isomers, and enantiomers too.
Khan Academy
Khan Academy: Macromolecules: Introduction to Macromolecules
An article introducing macromolecules. Learn about monomers and polymers and the processes that build them and break them down.
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Khan Academy: Biology: Macromolecules: Carbohydrates
An article that covers the structure and properties of carbohydrates.
Khan Academy
Khan Academy: Biology: Macromolecules: Lipids
An article that discusses the structure and function of lipids. Learn the basics of fats, oils, saturated and unsaturated fats, triglycerides, phospholipids, and steroids.