Atomic timeline questions Clue

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Atomic Timeline Clue

Atoms are made of smaller particles.

Atoms are indivisible particles.

Atoms can combine in chemical reactions.

Atoms are mostly empty space.

What was Democritus’ main contribution to atomic theory?

Molecule

Neutron

Atom

Electron

Which term did Democritus use to describe the smallest particle of matter?

Atoms are mostly empty space.

Atoms cannot be created in nuclear reactions.

Atoms contain protons and neutrons.

Compounds are combinations of atoms.

Which of the following is a part of Dalton’s atomic theory?

Atoms contain a nucleus with protons and neutrons.

All matter is made of atoms.

Atoms are indivisible and indestructible.

Atoms are mostly empty space.

Which of the following is a fundamental idea from Dalton's atomic theory?

Plum pudding model

Nuclear model

Quantum mechanical model

Planetary model

What model of the atom did J.J. Thomson propose?

Electrons

Neutrons

Protons

The nucleus

What discovery is J.J. Thomson most famous for?

Electrons have a positive charge.

Electrons are located in the nucleus.

Electrons have a negative charge.

Electrons are neutral.

J.J. Thomson’s experiments with cathode rays led to the discovery of which property of electrons?

X-ray diffraction

Gold foil experiment

Oil drop experiment

Cathode ray tube experiment

What experiment did Ernest Rutherford conduct that led to the discovery of the nucleus?

Electrons are scattered throughout a positive sphere.

The atom is mostly empty space with a positive nucleus.

Electrons orbit the nucleus in specific energy levels.

Atoms are indivisible and solid.

Rutherford’s model of the atom proposed that:

Electrons move in fixed orbits around the nucleus.

The nature of radioactive decay.

The nucleus contains both protons and neutrons.

Atoms are made of indivisible particles.

What is the main feature of Niels Bohr’s atomic model?

In fixed energy levels or orbits.

In paths determined by their charge.

In a cloud-like formation.

In random patterns with varying energy levels.

According to Niels Bohr's atomic model, how do electrons move around the nucleus?

Electrons exist in a probability-based electron cloud.

Electrons move like planets orbiting the sun.

Electrons are embedded in a positive sphere.

Electrons orbit the nucleus in fixed paths.

What concept did Erwin Schrödinger introduce in his atomic model?

Electron

Proton

Neutron

Nucleus

Which subatomic particle was discovered last?

Erwin Schrödinger

Ernest Rutherford

J.J. Thomson

Niels Bohr

Which of the following scientists developed the quantum mechanical model of the atom?

Protons and electrons

Neutrons and electrons

Protons and neutrons

Electrons only

Which of the following particles are found in the nucleus of an atom?

None of the above

Neutral

Negative

Positive

What charge does a proton carry?

None of these

Neutral

Positive

Negative

What charge does an electron carry in an atom?

Experiment Hall Atomic Fusion History