AQA GCSE Chemistry History of the Atom

The first person to ever talk about an atom was

• Democritus

• Rutherford

• Dalton

• Bohr

Who stated that all atoms of the same element are excacty alike?

• Democritus
• Dalton
• Thomson
• Borh

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

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J.J. Thomson provided evidence that an atom...

• is the smallest particle of matter
• contains negatively charged particles
• has an overall negative charge
• has an overall positive charge

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A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

• Electron Shells
• Orbitals
• Electron Cloud
• Nucleus

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Who is credited with the Atomic Theory?

• Dalton

• Thomson

• Bohr

• Democritus

Who discovered the neutrally charged subatomic particles?

• Dalton

• Goldstein

• J.J. Thomson

• Chadwick

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What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

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What particles would you find in the nucleus of an atom?

• Protons only

• Protons and Neutrons

• Neutrons and Electrons

• Protons and Electrons

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What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

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