PROTONS -FROM THE UNIT STRUCTURE OF ATOM.pptx

PROTONS -FROM THE UNIT STRUCTURE OF ATOM.pptx

1. STRUCTURE OF ATOM Archa S R BEd Physical Science

2. DISCOVERY OF PROTON

3. We learnt about the famous scientists who worked with discharge tube. Who were they?

4. Today we are going to study about a famous scientist who conducted the discharge tube experiments and achieved a milestone in the journey to find out the subatomic particles

5. EUGEN GOLDSTEIN In 1886 Eugene Goldstein conducted discharge tube experiments. His studies led to the discovery of smallest lightest positive particles called protons . The smallest, lightest , positive particles in the discharge tube were obtained when the tube was filled with Hydrogen

6. Who was Eugene Goldstein? A scientist who conducted discharge tube experiments. What was his discovery? Protons What was the charge of protons? Positive Why the particles were smallest and lightest when the tube was filled with Hydrogen? Hydrogen is the smallest element. Lets Discuss….

7. Goldstein discovered the protons using discharge tube experiments. But it was Earnest Rutherford who discovered that those particles are subatomic particles and named it Protons.

8. Eugene Goldstein discovered Proton through discharge tube experiment. Earnest Rutherford discovered that Proton is a subatomic particle and he name it proton. Protons possess positive charge.

9. Based on the video can you point out the main difference that happened in this experiment conducted by Goldstein from the cathode ray tube experiment? In this experiment Cathode taken is perforated and the rays are originate from Anode What do we call these rays? Anode rays/Canal rays What was the charge of canal rays? Positive

10. Goldstein observed that the behavior of Canal rays varied with the nature of gases taken in the discharge tube

11. Goldstein discovered Canal rays. Canal rays are originated from Anode. Canal rays contain the positive particles called Protons. Behavior of canal rays varies with the gas taken in discharge tubes.

12. Find out the true statements Goldstein discovered Canal rays. TRUE Goldstein proved that proton is a subatomic particle. FALSE Goldstein used perforated anodes. FALSE Canal rays are also known as anode rays. TRUE

13. What do you mean by Canal rays? Who gave proton that name? Who discovered the positively charged subatomic particles? What is the other name of canal rays? Lets answer…….

14. Illustrate the experiment in your notebook Work to do

15. Thank you