Atomic Models

What is Dalton's Atomic Model primarily known for?

• The concept of atoms as indivisible particles that make up matter.

• The theory that atoms are composed of smaller particles called electrons and protons.

• The idea that atoms can be created and destroyed in chemical reactions.

• The belief that all matter is continuous and not made of discrete particles.

Which subatomic particle did Thomson discover?

• Proton

• Neutron

• Electron

• Photon

In Bohr's Model, where are the electrons located?

• Electrons exist in a cloud surrounding the atom.

• Electrons are located only in the nucleus.

• Electrons are located in specific orbits around the nucleus.

• Electrons are randomly distributed throughout the atom.

What does the Modern Quantum Model emphasize about electrons?

• Electrons travel in fixed circular paths around the nucleus.

• Electrons have a definite position at all times.

• Electrons are stationary particles within the atom.

• Electrons exist in probabilistic orbitals rather than fixed paths.

How did Dalton describe atoms in his model?

• Dalton believed atoms were the smallest units of energy.

• Dalton described atoms as tiny spheres that can be divided.

• Dalton described atoms as indivisible particles that make up all matter.

• Dalton thought atoms were made up of smaller particles called molecules.

What is the significance of the 'plum pudding' analogy in Thomson's model?

• The analogy represents electrons orbiting a central nucleus like planets around the sun.

• The 'plum pudding' analogy signifies the atom as a positive sphere with embedded electrons, illustrating a composite atomic structure.

• The 'plum pudding' model suggests that atoms are entirely negative with no positive charge.

• The 'plum pudding' analogy depicts the atom as a solid, indivisible particle.

What did Rutherford's experiment reveal about the nucleus?

• Atoms are mostly empty space with a large nucleus.

• The nucleus is negatively charged and contains no mass.

• Atoms have multiple large nuclei scattered throughout.

• Atoms have a small, dense nucleus that contains most of their mass and is positively charged.

How does Bohr's Model differ from Rutherford's Model?

• Bohr's Model has a fixed nucleus, while Rutherford's Model has a dynamic nucleus.

• Rutherford's Model describes electrons in fixed orbits, while Bohr's Model allows for variable orbits.

• Bohr's Model suggests electrons can exist anywhere, while Rutherford's Model restricts them to specific paths.

• Bohr's Model introduces quantized electron orbits, while Rutherford's Model has electrons in random orbits.

What is one key feature of the Modern Quantum Model?

• Fixed energy levels only

• Wave-particle duality and probability distributions.

• Deterministic particle behavior

• Classical mechanics principles

What did Dalton believe about the indivisibility of atoms?

• Dalton claimed that atoms are infinitely divisible.

• Dalton believed that atoms are indivisible.

• Dalton believed that atoms can be divided into smaller parts.

• Dalton thought atoms were made of smaller particles called molecules.