Sophia Learning
Sophia: Enzymes
This narrated screencast explains the role enzymes play in cellular metabolism. [4:42]
Sophia Learning
Sophia: Structure and Function of Macromolecules: Enzymes
Listen to this podcast introducing the function of enzymes in the human body. [0:38]
Crash Course
Crash Course Chemistry #18: Enthalpy
A crash course episode introducing what the state function is, and how it varies from a path-dependent function; why enthalpy change is different from heat; and the fact that bonds are energy and to form and break them they release and...
Khan Academy
Khan Academy: 2015 Ap Chemistry Free Response 3b
Calculate the concentration of weak base using information about equivalence point in a titration. This example is from the 2015 AP Chemistry free response question 3b. [6:16]
Khan Academy
Khan Academy: Stoichiometry Example Problem 1
See a worked out stoichiometry example problem. [11:36]
Khan Academy
Khan Academy: Stoichiometry Example Problem 1
Figuring out grams of reactants and product produced from reaction of phosphorous and chlorine. [11:36]
Khan Academy
Khan Academy: Catalysts
This video [7:30] explains how a catalyst speeds up a chemical reaction by lowering the activation energy.
Next Vista for Learning
Next Vista for Learning: Stoichiometry
Explore stoichiometry in this video by making an analogy to the process and making s'mores. Then see a stoichiometry example using a real chemical equation. [3:46]
Sophia Learning
Sophia: Define Energy: Kinetic and Potential
This lesson will define kinetic and potential energy, particularly as it relates to chemical reactions.
Sophia Learning
Sophia: Enzyme Function: Lesson 1
This lesson will describe how an enzyme is used to turn substrate into product. It is 1 of 5 in the series titled "Enzyme Function."
Sophia Learning
Sophia: Balancing Chemical Equations: Lesson 2
This lesson will explain how to balance a chemical reaction. It is 2 of 6 in the series titled "Balancing Chemical Equations."
Sophia Learning
Sophia: Balancing Chemical Equations: Lesson 5
This lesson will explain how to balance a chemical reaction. It is 5 of 6 in the series titled "Balancing Chemical Equations."
Sophia Learning
Sophia: Catalyst: Lesson 3
This lesson will describe that a catalyst is something which can speed up a reaction by lowering activation energy. It is 3 of 4 in the series titled "Catalyst."
Sophia Learning
Sophia: Chemical Reactions: Lesson 2
This lesson will present a basic understanding of the periodic chart of elements and how to predict chemical reactions based on given information. It is 2 of 9 in the series titled "Chemical Reactions."
Sophia Learning
Sophia: Chemical Reactions: Activity Series: Lesson 2
This lesson will explain that a single replacement reaction needs a driving force in order to go forward to completion. It is 2 of 2 in the series titled "Chemical Reactions: Activity Series."
Sophia Learning
Sophia: Chemical Reactions: Activity Series: Lesson 1
This lesson will explain that a single replacement reaction needs a driving force in order to go forward to completion. It is 1 of 2 in the series titled "Chemical Reactions: Activity Series."
Sophia Learning
Sophia: Chemical Reaction Types: Acid Base: Lesson 1
This lesson will show that the products of an acid base reaction are water and a salt. It is 1 of 2 in the series titled "Chemical Reaction Types: Acid-Base."
Sophia Learning
Sophia: Chemical Reaction Types: Decomposition: Lesson 1
This lesson will demonstrate how to identify and complete a decomposition reaction. It is 1 of 2 in the series titled "Chemical Reaction Types: Decomposition."
Sophia Learning
Sophia: Chemical Reaction Types: Net Ionic Equation: Lesson 1
This lesson will show how to write a complete ionic equation and by omitting spectator ions a net ionic equation can be written. It is 1 of 2 in the series titled "Chemical Reaction Types: Net Ionic Equation."
Sophia Learning
Sophia: Chemical Reaction Types: Single Replacement: Lesson 2
This lesson will demonstrate how to identify and complete a single replacement reaction. It is 2 of 2 in the series titled "Chemical Reaction Types: Single Replacement."
Sophia Learning
Sophia: Compounds and Elements: Lesson 3
This lesson will present a basic overview of elements and how they interact in chemical reactions and compound formations. It is 3 of 4 in the series titled "Compounds and Elements."
Sophia Learning
Sophia: Enzyme Function: Lesson 5
This lesson will describe how an enzyme is used to turn substrate into product. It is 5 of 5 in the series titled "Enzyme Function."
Sophia Learning
Sophia: Transferring Heat Energy: Exothermic and Endothermic
This lesson will define exothermic and endothermic, and explain the relationship of these terms to transfer of heat during a chemical reaction.
Sophia Learning
Sophia: Chemical Equation: Vocabulary: Lesson 2
This lesson will explain the general format of a chemical equation including products, reactants, arrow notation, and states of matter. It is 2 of 2 in the series titled "Chemical Equation: Vocabulary."