Front

What is the atomic number of Carbon?

Back

6

Front

What did Rutherford's gold foil experiment demonstrate?

Back

There is a dense positively charged nucleus at the center of an atom.

Front

Who conducted the gold foil experiment?

Back

Ernest Rutherford

Front

What is the valence shell of an atom?

Back

The outermost shell of an atom.

Front

What did Thomson's cathode ray tube experiment lead to the discovery of?

Back

Negatively charged electrons.

Front

What is the charge of protons?

Back

Positive.

Front

What is the charge of electrons?

Back

Negative.

Front

What is the nucleus of an atom composed of?

Back

Protons and neutrons.

Front

What is the significance of the Bohr model?

Back

It introduced the idea of quantized energy levels for electrons.

Front

What are isotopes?

Back

Atoms of the same element with different numbers of neutrons.