12 Questions
What is the process called when a gas transitions directly to a solid phase without passing through the liquid phase?
Deposition
Which ancient Greek philosophers first proposed the concept of atoms as the fundamental building blocks of matter?
Democritus and Leucippus
Who formulated the modern atomic theory in the early 19th century based on experimental observations?
Dalton
What was the primary contribution of Ernest Rutherford's gold foil experiment?
Discovery of the atomic nucleus
What was the key concept introduced by Niels Bohr's model of the atom?
Quantized electron energy levels
What was the primary contribution of James Chadwick's discovery of the neutron?
Provided a more complete understanding of atomic structure
What happens to the inter-molecular forces during the phase change from solid to liquid?
The inter-molecular forces weaken.
What is the main difference between vaporization and evaporation?
Vaporization occurs at the surface of the liquid, while evaporation occurs throughout the liquid.
What happens to the arrangement of particles during the phase change from liquid to solid (freezing)?
The arrangement of particles becomes more ordered.
Which phase change involves the direct transition from solid to gas without passing through the liquid phase?
Sublimation
What happens to the particles' kinetic energy during the phase change from liquid to gas (vaporization/evaporation)?
The particles gain kinetic energy.
What happens to the heat energy during the phase change from solid to liquid (melting)?
Heat energy is absorbed.
Learn about the process of melting (solid to liquid) and freezing (liquid to solid) in phase changes. Understand how heat energy affects inter-molecular forces, particle arrangement, and kinetic energy. Explore how substances transition between solid and liquid phases.
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