Answer :
Final answer:
The differences between Dalton's Atomic Theory and the Modern Atomic Theory, the Law of Conservation of Mass, and J.J. Thompson's cathode ray tube experiments.
Explanation:
1. Dalton's Atomic Theory is an early model of the atom that states that atoms are indivisible and that all atoms of a given element are identical. It also states that chemical reactions involve the rearrangement of atoms. Modern Atomic Theory, on the other hand, incorporates the idea that atoms are made up of subatomic particles (protons, neutrons, and electrons) and that atoms can be divided into smaller parts in nuclear reactions.
2. The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. This means that the total mass of the reactants is equal to the total mass of the products. For example, if you burn a piece of paper, the mass of the ash and the gases produced will be equal to the mass of the original paper.
3. J.J. Thompson used cathode ray tube experiments to prove the existence of negatively charged particles called electrons. He observed that a beam of particles was deflected by electric and magnetic fields, indicating the presence of these charged particles.
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