Exploring the Atom

The video explores the concept of atoms, starting with their historical perception as indivisible particles. It delves into the structure of an atom, comparing it to a solar system with electrons orbiting a nucleus. The video explains the discovery of subatomic particles like electrons, protons, and neutrons, and discusses their properties. It highlights the limitations of Rutherford's model and introduces Bohr's model, which explains the stability of atoms through fixed electron orbits. The video also covers electron configuration rules using examples of carbon, chlorine, and calcium.

What does the word 'atom' mean in Greek?

• Indivisible

• Incomparable

• Invisible

• Infinite

Who discovered the electron?

• Thomson

• Rutherford

• Bohr

• Chadwick

What is the center of an atom called?

• Electron

• Neutron

• Nucleus

• Proton

Which subatomic particle is neutral?

• Electron

• Photon

• Proton

• Neutron

According to Bohr's model, where do electrons revolve?

• In fixed orbits

• In random paths

• In spiral paths

• In elliptical paths

What are the fixed orbits in an atom called?

• Electron paths

• Electron shells

• Electron rings

• Electron layers

How many electrons can the first shell hold according to Bohr-Berry's rules?

• 2

• 4

• 6

• 8

What is the electron configuration of carbon?

• 2,4

• 2,6

• 2,2

• 2,8

How many electrons does chlorine have in its third shell?

• 7

• 8

• 5

• 6

What is the electron configuration of calcium?

• 2,8,8,2

• 2,8,8,4

• 2,8,8,6

• 2,8,8,0