Rewrite the atomic theory into an online course.

John Dalton (1766-1844) is the scientist credited for proposing the atomic theory. This theory explains several concepts that are relevant in the observable world: the composition of a pure gold necklace, what makes the pure gold necklace different than a pure silver necklace, and what occurs when pure gold is mixed with pure copper. Before discussing the atomic theory, this article explains the theories that Dalton used as a basis for his theory: the law of conservation of mass and the law of constant composition.

Law of Conservation of Mass: (1766-1844)
The law of conservation of mass states that the total mass present before a chemical reaction is the same as the total mass present after the chemical reaction; in other words, mass is conserved. The law of conservation of mass was formulated by Antoine Lavoisier (1743-1794) as a result of his combustion experiment, in which he observed that the mass of his original substance—a glass vessel, tin, and air—was equal to the mass of the produced substance—the glass vessel, “tin calx”, and the remaining air.

Historically, this was a difficult concept for scientists to grasp. If this law was true, then how could a large piece of wood be reduced to a small pile of ashes? The wood clearly has a greater mass than the ashes. From this observation scientists concluded that mass had been lost. However, the illustration below shows that the burning of word does follow the law of conservation of mass. Scientists did not take into account the gases that play a critical role in this reaction.

Law of Constant Composition
Joseph Proust (1754-1826) formulated the law of constant composition (also called the law of definite proportions). This law states that if a compound is broken down into its constituent elements, the masses of the constituents will always have the same proportions, regardless of the quantity or source of the original substance. Joseph Proust based this law primarily on his experiments with basic copper carbonate. The illustration below depicts this law; 31 grams of H2O and 8 grams of H2O are made up of the same percent of hydrogen and oxygen.
Welcome to the online course "Unraveling the Atomic Theory: A Journey into Mass and Composition!" 

In this course, we will explore the scientific theory proposed by John Dalton[1766-1844] known as the Atomic Theory. Get ready to uncover the secrets behind the composition of matter and its observable properties. Let's get into it!

Module 1:  Introduction to the Atomic Theory
• Meet John Dalton:  Learn about the life and contributions of John Dalton behind the Atomic Theory.
• The significance of the Atomic Theory: Understand why the Atomic Theory changed our understanding of matter and its behavior.
Key Concepts: Explore the fundamental concepts that the Atomic Theory explains, including the composition of materials and the difference between substances.

Module 2: Foundations of the Atomic Theory
• The Law of Conservation of Mass: Discover Antoine Lavoister's [1743-1794] breakthrough experiment that led to the formulation of the Law of Conservation of Mass.
• Understanding Mass Conservation: Learn how the Law of Conservation of Mass states that the total mass before a chemical reaction remains unchanged after the reaction.
• Applying Mass Conservation: Explore the real-world examples, to see how mass is conserved even when they appear otherwise.

Module 3: Unraveling the Law of Constant Composition
• Joseph Proust and the Law of Constant Composition: Went into the work of Joseph Proust[1754-1826] and his experiments with basic copper carbonate that led to the formulation of the Law of Constant Composition.
• Exploring Constant Composition:  Understand how this law states that the proportions of elements in a compound remain the same, regardless of the original substance's quantity or source.
• Case Studie: Analyze various compounds and break down the elements that make them up, to observe the consistent proportions and validate the Law of Constant Composition.

Module 4: Introducing the Atomic Theory
• Dalton's Atomic Theory: Learn about the postulates and principles made by John Dalton to explain the behavior of matter.
• Atomic Structure: Explore the concept of atoms and the fundamental building blocks of matter and their role in the composition and properties of substances.
•Applying the Atomic Theory: Investigate scenarios such as the composition of pure gold and silver necklaces and mixing the mixing of pure gold with copper to understand how Dalton's theory provides insights into these observable phenomena.

Module 5: The Legacy of the Atomic Theory
• Scientific Impact: Discover how the influence of the Atomic Theory on subsequent scientific advancements, including the development of modern chemistry.
• Evolution of the Atomic theory: Trace the progression of the Atomic Theory and its refinements through subsequent discoveries.
• Practical Application: Explore the practical applications of The Atomic Theory in various fields.

Congratulations on completing the course "Unraveling the Atomic Theory: A Journey into Mass and Composition!" You now have a great understanding of John Dalton's Atomic Theory and its implications for the composition and behavior of matter. 