Questions and Answers
In the gas state, particles have total ______, with much empty space between them.
disorder
In a liquid, particles are free to move ______ each other.
relative to
A crystalline solid has an ______ arrangement of particles.
ordered
The solid and liquid states are referred to as ______ phases due to their particle arrangement.
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The kinetic molecular theory explains the ______ of matter.
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The amount of space in between particles is related to the substance's state of ______.
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In a gas, particles are ______ spaced and can be compressed.
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Phase changes happen when the ______ of the substance changes sufficiently.
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When solid water reaches 0°C, it undergoes a phase change from ______ to liquid.
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The temperature of a substance does not change as it goes from one phase to ______.
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Matter is made of particles that are constantly in ______.
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The energy in motion is called ______ energy.
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The amount of kinetic energy in a substance is related to its ______.
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In solids, particles are closely packed and have limited ______.
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In gases, particles have high kinetic energy and can move ______.
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Fermionic condensates were first created in ______.
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Fermionic condensates are a type of ______ that can flow with no viscosity.
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Fermionic condensates are made up of ______, which include protons, neutrons, and electrons.
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Unlike Bose-Einstein Condensates (BEC), fermionic condensates are made of ______.
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The fundamental difference between states of matter is the ______ between particles.
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In a ______, the molecules are so close together that there is very little empty space.
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Liquids are much more difficult to compress than ______.
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A liquid has a definite ______ because the molecules do not break away from their attractive forces.
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Molecules in a liquid can move past one another freely, allowing the liquid to ______ and assume the shape of its container.
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In a ______, molecules are held together tightly, which gives solids their shape.
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In a solid, molecules are held ______ in position.
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Solids are characterized by ______-range order.
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Solids possess ______ shape and volume.
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The close-packed arrangement of molecules in a solid forms a ______-dimensional structure.
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There is even less empty space in a solid than in a ______.
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Study Notes
States of Matter
- Matter exists in different states: solid, liquid, gas, and special cases like fermionic condensates.
- Solids and liquids are referred to as condensed phases because their particles are closely packed.
Particle Arrangement
-
Gas:
- Total disorder with large empty spaces
- Particles have complete freedom to move and are far apart
-
Liquid:
- Moderate disorder with particles close together
- Particles or clusters can move relative to one another
-
Crystalline Solid:
- Ordered arrangement, particles are in fixed positions
- Close-packed structure with minimal empty space
Kinetic Molecular Theory
- A model explaining the behavior of matter based on the motion of particles.
- Matter is composed of continually moving particles; this motion is termed kinetic energy.
- The kinetic energy of a substance correlates to its temperature.
Key Postulates
- There is space between particles, varying with the state of matter:
- Gas: Widely spaced, compressible, and expandable.
- Liquid: Closely packed but can still be compressed and expanded.
- Crystalline Solid: Tightly packed, incompressible, and retain shape.
Phase Changes
- Phase changes occur with significant temperature changes; during a phase change, temperature remains constant.
- For example, when heating ice, the temperature rises until reaching 0°C (melting point), after which added heat facilitates the transition to liquid.
Fermionic Condensates
- First created in 2004, these are superfluid states of matter consisting of fermions (particles with odd atomic numbers).
- Unlike bosonic condensates, fermionic condensates exhibit unique behaviors, including flowing without viscosity.
Properties of Liquids
- Molecules in liquids are closely packed with little empty space, rendering them less compressible than gases.
- Liquids possess a definite volume due to attractive forces holding the molecules together.
- They can flow, change shape, and assume the form of their containers.
Properties of Solids
- Molecules in solids are rigidly fixed in position, providing limited freedom of motion.
- Solids are characterized by long-range order, with molecules arranged in a regular three-dimensional structure.
- They are nearly incompressible, possessing both a definite shape and volume.
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Description
Test your knowledge on the different states of matter, including the arrangements and behaviors of particles in solids, liquids, and gases. Understand the distinctions between crystalline solids and other phases. Challenge yourself to learn these fundamental concepts in chemistry!
