Atomic Theory

Copper-63 has how many protons?

The Quantum model of the atom is sometime referred to as

Who discovered the electron?

Can you pinpoint the exact location of an electron at any given time?

Atoms of the same element that have different numbers of neutrons

JJ Thompson proposed which model of the atom?

Niels Bohr proposed which model of the atom?

Identify the mass number

Calculate the average atomic mass of silver

Copper-63 has how many neutrons?

Atoms of the same element that have different mass numbers

The composition of the nucleus of an atom

A subatomic particle that has no charge and is found in the nucleus is a(n)

Modern Atomic Theory

Copper-63 has how many electrons?

A nuclear particle that has about the same mass as a proton, but with no electrical charge

Calculate the average atomic mass of oxygen

Who was the man who lived from 460BC–370BC & was among the first to suggest the idea of atoms?

Mass of a neutron

Who determined electrons are contained in energy levels?

Mass of a proton

The two isotopes of copper are Cu-63 and Cu-65. The atomic mass of copper is 63.55amu. Which isotope is most abundant?

Orbitals are three dimensional regions where electrons are most likely to be found

Who discovered the neutron?

The gold foil experiment led to the discovery of the

Isotopes of an element contain different numbers of

The composition of the nucleus of an atom

Who used the Gold Foil Experiment to show that the atom had a nucleus ?

What did Rutherford conclude about the structure of the atom?

Mass of a electron

The Gold Foil Experiment showed the atom was ------

Experiments with cathode rays led to the discovery of the

The smallest particle of an element that retains the properties of that element is a(n)

A subatomic particle that has a positive charge and is found in the nucleus of an atom is a(n)

Identify the atomic number

Who first proposed an atomic theory based on scientific knowledge?