Unit 2A Test Review: Atoms

Which subatomic particle establishes the identity of the element?

• protons

• neutrons

• electrons

Which subatomic particle is never altered in an atom?

• protons

• neutrons

• electrons

Which subatomic particle varies in ions?

• protons

• neutrons

• electrons

Which subatomic particle varies in isotopes?

• protons

• neutrons

• electrons

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Which subatomic particle has a negative charge?

• protons

• neutrons

• electrons

Which subatomic particle has a neutral charge?

• protons

• neutrons

• electrons

Which subatomic particle has a positive charge?

• protons

• neutrons

• electrons

Match the scientist to their model.

• Schrodinger

• 
• Rutherford

• 
• Bohr

• 
• JJ Thomson

• 

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Match the scientist to their model.

• J.J. Thomson

• Gold Foil Experiment & Evidence of the Nucleus

• Rutherford

• Mechanical wave model also known as the Quantum Mechanical Model & Electron orbitals are nothing like orbits.

• Dalton

• Atoms of a given element are identical. & Atoms of different elements combine to form chemical compounds.

• Bohr

• Cathode ray Experiment & The Plum Pudding Model

• Schrodinger

• Electrons occupy only certain orbits. & Each orbit has an energy associated with it.

Who developed this early atomic theory?

Everything is composed of “atoms”, which are physically, but not geometrically, indivisible.

• Bohr

• Dalton

• Rutherford

• J.J. Thomson

• Democritus