Atomic Theory - ver1

Which of the following shows the correct order of Atomic Theory Timeline

• Rutherford, Bohr, Dalton, Democritus, Thomson

• Bohr, Democritus, Thomson, Rutherford, Dalton

• Dalton, Thomson, Rutherford, Bohr, Democritus

• Democritus, Dalton, Thomson, Rutherford, Bohr

How did Rutherford discovered the proton?

• through the cathode-ray experiment

• through the Gold-foil experiment

• through studying the wave property of an electron

• through injecting gamma rays in an atom

This particle balances the charges from the protons to make the atom neutral

• proton

• electron

• neutron

• nucleus

Rutherford discovered what part of the atom

• nucleus

• neutron

• proton

• electron

He claimed that matter was made of small, hard particles that he called “atomos.”

• Democritis

• Dalton

• Moseley

• Einstein

What will happen when an electron jumps from a higher energy level to a lower energy level?

• Nothing will happen.

• Energy is absorbed.

• Energy is emitted in the form of light.

• The electron will leave the ground state.

_____ is the Greek word meaning indivisible.

• Atom

• Atomic

• Atomos

• Atomis

DO YOU REMEMBER.....

You are observing 2 quantities. As one decreases, the other increases by the same amount. These quantities are _____ proportional.

• inversely

• not

• directly

• adversely

• succinctly

Thomson Experimented with ______

• Gold Foil

• alpha particles

• cathode rays

• protons

Who gave the idea that the atom is mostly made up of empty space?

• Ernest Rutherford

• JJ Thomson

• Erwin Schrodinger

• Neils Bohr