Atoms: The building block of matter

Atoms: The Building Blocks of Matter

Objectives For This Lesson

• Understand the components of an atom

• Identify the contributions of various scientists to the development of the atomic model

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Multiple Choice

Protons are

• Positive

• Neutral

• Negaative

• all the above

Multiple Choice

Electrons are

• Positive

• Neutral

• Negative

• All the above

Multiple Choice

Neutrons are

• Positive

• Neutral

• Negative

• All the above

Multiple Choice

The nucleus contains

• Protons & Neutrons

• Protons & Electrons

• Neutrons & Electrons

• Protons, Neutrons, and electrons

Multiple Choice

The outer orbital shells contain which particle?

• Protons & neutrons

• electrons only

• Neutrons only

• Protons only

Scientists that contributed to the development of atomic model

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Multiple Choice

Who believed that the electrons were like plums embedded in a positively charged "pudding"?

• J.J. Thomson

• Democritus

• Dalton

• Millikan

Multiple Choice

who determined the mass of an electron?

• Robert Millikan

• John Dalton

• J.J. Thomson

• Antoine Lavoisier

Multiple Choice

Who's theory states that, Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties

• Democritus

• Robert Millkan

• J.J. Thomson

• John Dalton

Multiple Choice

The modern theory states that Atoms cannot be subdivided, created or destroyed in ___________

• ordinary temperatures

• ordinary physical reactions

• ordinary chemical reactions

• ordinary solutions

Multiple Choice

Democritus was responsible for ________________?

• discovering the proton

• discovering the electron

• coining the term nucleus

• Coining the term atomos