Khan Academy
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.
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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]
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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Khan Academy: Biology: Macromolecules: Nucleic Acids: Molecular Structure of Dna
Explore the molecular structure of DNA in this article. Learn about the components of DNA: nucleotide, nitrogenous base, and phosphate.
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Khan Academy: Biology: Macromolecules: Nucleic Acids
An article investigating the structure of DNA and RNA.
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Khan Academy: Biology: Macromolecules: Orders of Protein Structure
An article that investigates the levels of protein structure. Understand how the order of the protein structure affects its function.
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Khan Academy: Biology: Energy and Enzymes: Overview of Metabolism
An article reviewing how energy flows in a cell including metabolic pathways.
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Khan Academy: Biology: Enzymes and Energy: Types of Energy
An article that reviews over the different types of energy: kinetic, potential, and chemical.
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Khan Academy: Biology: Energy and Enzymes: The Laws of Thermodynamics
Explore the first and second law of thermodynamics as it applies to the body in this article.
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Khan Academy: Biology: Energy and Enzymes: Free Energy
In this article, read all about the relationship between spontaneity and equilibrium to the Gibb's free energy change.
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Khan Academy: Biology: Energy and Enzymes: Atp and Reaction Coupling
Investigate ATP structure, ATP hydrolysis to ADP, and reaction coupling in this article.