Unit 2 Chemistry- the atom

What is the charge on a proton?

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What is the charge of an electron?

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Tags

NGSS.MS-PS2-3

What is the charge of a neutron?

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Who was the first scientist who came up with the idea of atoms?

• Dalton

• Democritus

• Rutherford

• Schrodinger

Who was the scientist who came up with the Uncertainty Principle?

• Rutherford

• Thomson

• Schrodinger

• Heisenberg

John Dalton stated:

• elements are made of atoms
• atoms of a given element are identical
• atoms cannot be subdivided, created, nor destroyed
• all of the above

Tags

NGSS.HS-PS1-7

The scientist responsible for "discovering" the nucleus is:

• Bohr
• Rutherford
• Schroedinger
• Einstein

Tags

NGSS.HS-PS1-8

How did Rutherford discover the nucleus?

• Cathode tube ray experiment
• Gold Foil Experiment
• Planetary Model
• Plum Pudding Model

Electrons orbit a certain distance from the nucleus. Either radiate or absorb energy when jumping orbitals.

• Dalton

• Thomson

• Rutherford

• Bohr

Atom is a positively charged cloud with embedded negative electrons

• Dalton

• Thomson

• Rutherford

• Bohr