Atoms and The Periodic Table

He discovered the neutron in the nucleus and completed the current atomic model.

• J.J. Thomson
• Ernest Rutherford
• Niels Bohr
• James CHadwick

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According to Ernest Rutherford, an atom is made of mostly....

• empty space
• electrons
• the nucleus
• protons

The atomic particle with no charge is the...

• proton
• neutron
• electron
• nucleus

The atomic particle with a positive charge is the...

• proton
• neutron
• electron
• nucleus

The atomic particle with a negative charge is the...

• proton
• neutron
• electron
• nucleus

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

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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

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In the nucleus you can find the

• Protons, neutrons and electrons

• Protons and neutrons

• Protons and electrons

• Neutrons

The atomic number is the same as the number of

• Protons

• Neutrons

• Mass

• Atom

What is matter made up of?

• Air

• non matter

• Atoms

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