Atomic Structure and Models Quiz

What is the smallest unit of matter that retains the properties of an element?

• Atom

• Molecule

• Proton

• Electron

Which model proposed that electrons are embedded in a positively charged sphere?

• Dalton's Model

• Thomson's Model

• Bohr's Model

• Rutherford's Model

What did Rutherford's scattering experiment lead to the discovery of?

• Proton

• Nucleus

• Electron

• Neutron

According to Rutherford's model, what is the central part of an atom called?

• Proton

• Neutron

• Electron Cloud

• Nucleus

What was a major drawback of Rutherford's model?

• It lacked a nucleus

• It couldn't explain electron stability

• It didn't include protons

• It was too complex

In Bohr's model, what happens when an electron jumps to a higher energy level?

• Electron becomes a proton

• Electron is destroyed

• Energy is absorbed

• Energy is emitted

What is the maximum number of electrons that can be accommodated in the outermost shell according to Bohr's model?

• 2

• 8

• 18

• 32

What is the term for the combining capacity of an element?

• Valency

• Isotope

• Mass Number

• Atomic Number

What do isotopes of an element have in common?

• Same atomic number

• Same chemical properties

• Same number of neutrons

• Same mass number

What are atoms with the same mass number but different atomic numbers called?

• Ions

• Molecules

• Isotopes

• Isobars