Unit 2 lesson 1

​TUESDAY 9/6: UNIT 2 – INTRO TO ATOMIC STRUCTURE,

HISTORY OF THE ATOM

• MON 9/12 QUIZ: 35 ELEMENTS

• THURS 9/15- LAB: FLAME TEST/ SPECTRAL ID-You must have your lab safety form turned in

• Fri 9/16 & 9/23 are PLD days

Announcements/Reminders

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Bellwork:

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Agenda

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1. PICK UP UNIT 2 PACKET

2. Look over the packet schedule and complete the learning objectives

3. Complete the form on GC​

• HISTORY OF THE ATOM

• PACKET PAGE 1

Multiple Choice

Idea was of an indivisible particle of matter he called "atomos"

• John Dalton
• Aristotle
• Democritus
• Plato

Multiple Choice

Which scientist is responsible for first stating that all the atoms of a particular element are identical but are different from the atoms of all other elements (Atomic Theory)?

• Dalton

• Thomson

• Aristotle

• Democritus

• Proust

Multiple Choice

This was the first model of the atom ever proposed. It was simple and described atoms as tiny spheres that could not be broken down into smaller pieces.

• Democritus's model of the atom
• The "Plum Pudding Model" of the atom
• The "Rutherford Model" of the atom
• The "Quantum Mechanical Model" of the atom

Multiple Choice

This model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. Is shows electrons floating freely in a positive space.

• The "Plum Pudding Model" of the atom
• The "Rutherford Model" of the atom
• Democritus's model of the atom
• The "Quantum Mechanical Model" of the atom

Multiple Choice

Ernest Rutherford discovered that atoms were mostly _________________. 

• negatively charged
• positively charged
• electrons
• empty space. 

Multiple Choice

Discovered the nucleus

• Democritus
• Robert Millikan
• James Chadwick
• Ernest Rutherford

Multiple Choice

What can you conclude from the fact that scientists continue to update the atomic model?

• New information about atoms continues to be discovered
• Old information about atoms is completely useless
• Scientists did not have any information about atoms until a few years ago
• Scientists still have no idea what atoms look like

Multiple Select

This is the most complete and current model of the atom. Electrons are located in complex orbitals. (Check all that apply)

• The "Quantum Mechanical Model" of the atom
• The "Rutherford Model" of the atom
• The "Plum Pudding Model" of the atom
• The "wave mechanical model" of the atom

• The "Electron cloud model" of the atom

Multiple Choice

This model added on to previous models by showing electrons existed at certain "energy levels". It is often called the Planetary Model.

• The "Bohr Model" of the atom
• The "Rutherford Model" of the atom
• The "Plumb Pudding Model" of the atom
• The "Quantum Mechanical Model" of the atom