Atomic Structure Quiz

What is the smallest unit of matter?

• Molecule

• Atom

• Electron

• Neutron

Who first suggested the existence of atoms as indivisible particles?

• Aristotle

• Dalton

• Democritus

• Rutherford

Which subatomic particle has a positive charge?

• Proton

• Neutron

• Electron

• Positron

Which model of the atom was proposed by J.J. Thomson?

• Solid Sphere Model

• Plum Pudding Model

• Nuclear Model

• Electron Cloud Model

Who discovered the neutron?

• Rutherford

• Bohr

• Chadwick

• Thomson

What did John Dalton propose about atoms?

• They can be divided into smaller particles.

• They are indivisible and combine in fixed ratios.

• They are surrounded by a cloud of electrons.

• They have a dense nucleus.

What is the charge of an electron?

• Positive

• Neutral

• Negative

• No charge

Which experiment led to the discovery of the atomic nucleus?

• Cathode Ray Experiment

• Gold Foil Experiment

• Oil Drop Experiment

• Double-Slit Experiment

Which scientist proposed the Bohr Model of the atom?

• Thomson

• Bohr

• Rutherford

• Schrodinger

Which subatomic particle is found in the nucleus and has no charge?

• Proton

• Neutron

• Electron

• Quark