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Greek Models
Dalton's Atomic Theory
Thomson's Atomic Theory
Rutherford's Atomic Theory
Bohr's Atomic Theory
100
This man believed that all matter was made up of extremely small particles that could not be divided.
What is Democritus
100
This could represent his atomic theory
What is a solid sphere?
100
Thomson was the first person to discover that atoms had _______.
What are electrons or smaller particles?
100

The fast moving postively charged particles of radioactivity that were directed at the foil.

What are alpha particles?

100
Can be described as _________ orbiting around the ________.
What are planets, sun?
200
The Greek word atomos means this
What is uncut or indivisible?
200
Dalton's atomic theory was developed around how atoms of different elements combined to form these.
What are compounds?
200

Thomson used a ________ _________ _______to discover the first subatomic particle.

What is a cathode ray tube?

200
Rutherford's main discovery.
What is the nucleus?
200
True/False: Bohr disagreed with Rutherford's postive nucleus theory
What is false?
300

The reason Democritus's model was not as accepted as Dalton's model.

What is lack of scientific experimental evidence?

300

Compounds have fixed ____________.

What are compositions? Or ratios of atoms?

300

Name of the model of Thomson's atomic theory

What is plum pudding?

300

The positively charged particles sometimes were deflected in Rutherford's experiment because they were repelled by the _________.

What is postively charged nucleus?

300

Only certain energies for electrons are possible (i.e. energy is not a continuum) because the energy was ____________________. (Think of the wonky ladder.)

What is quantized?

400

The concept that Democritus contributed to our understanding of atoms.

What is there is a fundamental building block of matter?

400
A compound contains atoms of more than one ___________.
What is element?
400

The glowing beam of light in this experiment was attracted to (positive/negative) plate.

What is positive?

400

Describe Rutherford's hypothesis based on Thomson's atomic model.

The particles would go through the gold foil.

400

An electron that moves from an outer orbit to one nearer the nucleus releases its excess energy as ____________.

What is light?

500

The four elements according to Aristotle

What are air, earth, fire and water?

500

True or False: (based on Dalton's theory) all atoms of the same element are exactly the same.

What is true?

500

Which model was the first to replace Thomson's model of the atom?

What is Rutherford's Nuclear model?

500

Rutherford theorized that most of the atom is _________________________.

What is empty space?

500

What is our current model of the atom? (It replaced the Bohr model which only worked for hydrogen.)

What is the Quantum Mechanical Model?