Atomic Theory History

Atomic Theory History

Multiple Select

Which of these are accurate descriptions of an atom?

• Tiny

• Make up matter

• Contain protons

• Contain neutrons

• Contain electrons

Poll

How many scientists/philosophers can you name that contributed to the structure of the atom?

• 0-1

• 2-3

• 3-4

• 5

Multiple Choice

How did models of the atom change over time?

• More complex

• Simpler

• Stayed the same

Multiple Select

Which of these are parts that make up an atom?

• Electrons

• Protons

• Photons

• Neutrons

Open Ended

What do you think the word subatomic means? Try breaking the word down to gain its meaning.

Multiple Choice

After watching the video clip, what is the best definition for a subatomic particle?

• Larger pieces that make up an atom.

• Smaller pieces that make up an atom.

Multiple Select

What are the names of the three subatomic particles that make up an atom?

• Photons

• Neutrons

• Protons

• Electrons

Parts of an Atom

Take a look at this representation of the atom. Pay close attention to its subatomic particles.

Multiple Choice

What charge does an electron have?

• Positive

• Negative

• No charge

Who Discovered the Electron?

Where do you first see a negative charge appearing in the atom?

Multiple Choice

Who discovered the electron?

• Rutherford

• Dalton

• Thomson

• Bohr

The Electron

• Was discovered by J.J Thomson

• He used a Cathode Ray to discover the electron.

• His model of the atom was called Plum Pudding.

Multiple Choice

What was the name of Thomson's experiment that he used to discover the electron?

• Planetary

• Gold Foil

• Cathode Ray

• Quantum Mechanical

Multiple Select

What two particles make up the nucleus?

• Protons

• Neutrons

• Electrons

The Nucleus

• The nucleus is the dense structure in the center of the atom.

• Contains protons and neutrons

• Makes up most of the mass of the atom

Multiple Select

What two particles make up the nucleus?

• Protons

• Neutrons

• Electrons

Who discovered the nucleus?

Where do you first see a dense structure located in the center of the nucleus appearing?

Multiple Choice

Who discovered the nucleus?

• Rutherford

• Dalton

• Thomson

• Bohr

The Nucleus

• Was discovered Ernest Rutherford

• He the Gold Foil Experiment to discover the nucleus.

• His model of the atom was called Nuclear Model

Multiple Choice

What was the name of Rutherford's experiment that he used to discover the nucleus?

• Planetary

• Gold Foil

• Cathode Ray

• Quantum Mechanical

Poll

I know the names of the three subatomic particles that make up an atom?

Poll

I know the names of the two subatomic particles that make up the nucleus?

Poll

I know where the nucleus is located in an atom?

Multiple Choice

This scientist discovered the nucleus.

• Thomson

• Rutherford

Multiple Choice

This scientist discovered the electron.

• Thomson

• Rutherford