Concept explainers
The experimental evidence that convinced Thomson that he had discovered a subatomic particle, while working with cathode rays.
Answer to Problem 1CQ
While discovering cathode rays, J.J. Thomson observed deflection of cathode rays in between charged metal plates. After observing these all Thomson concludes that the electrons are fundamental particle of matter and he called them as sub atomic particle.
Explanation of Solution
While discovering cathode rays, J.J. Thomson observed deflection of cathode rays in between charged metal plates. As the law of charges if the charges characteristic are same then they repel each other and when the charges characteristic are different then they attract each other.
The cathode rays are negatively charged particles and deflected in the combination of the electric and magnetic fields. After observing that the invariance of the ratio of charge to mass Thomson concluded that the electrons are a fundamental particle of a matter and it is true no matter what the conditions under which he measured the ratio. So he called them as a subatomic particle.
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Chapter 8 Solutions
Integrated Science
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