Understanding the Atom

What is the main topic of the video?

• The solar system

• The atom

• Chemical reactions

• The human body

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Who were the Greek philosophers that first thought about the concept of the atom?

• Homer and Hesiod

• Leucippus and Democritus

• Aristotle and Pythagoras

• Socrates and Plato

What does the word 'atom' mean?

• Invisible

• Incredible

• Indivisible

• Infinite

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Which chemist created a model where the atom was a tiny solid ball?

• Joseph Thomson

• Ernest Rutherford

• Niels Bohr

• John Dalton

What did Joseph Thomson discover?

• Electron

• Nucleus

• Neutron

• Proton

What was Thomson's atomic model known as?

• Raisin Pudding Model

• Solid Sphere Model

• Planetary Model

• Quantum Model

Who presented the atomic model with protons and neutrons in the nucleus?

• Albert Einstein

• Ernest Rutherford and Niels Bohr

• Joseph Thomson

• John Dalton

What particles are found in the nucleus of an atom?

• Neutrons and electrons

• Only protons

• Protons and neutrons

• Electrons and protons

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How do electrons move around the nucleus according to Rutherford and Bohr's model?

• They do not move

• In circles

• In straight lines

• In random paths

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