Solids, Liquids and Gases Ch 3 Section 3.1. Describing States of Matter Materials can be classified...
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Transcript of Solids, Liquids and Gases Ch 3 Section 3.1. Describing States of Matter Materials can be classified...
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Solids, Liquids and Solids, Liquids and Gases Gases
Ch 3Ch 3
Section 3.1 Section 3.1
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Describing States of MatterDescribing States of Matter
Materials can be classified as solids, Materials can be classified as solids, liquids or gases based on whether liquids or gases based on whether their shapes and volumes are definitetheir shapes and volumes are definite ((unchangingunchanging) ) or variableor variable ( (changingchanging) )
Shape and volume are clues as to how Shape and volume are clues as to how particles are arranged particles are arranged
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SolidsSolids
Material has definite shape and volumeMaterial has definite shape and volume Almost all solids have some type of orderly Almost all solids have some type of orderly
arrangement on the atomic level arrangement on the atomic level
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LiquidsLiquids
Material has definite volume, but not a Material has definite volume, but not a definite shapedefinite shape
Liquids always take the shape of their Liquids always take the shape of their containers containers
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GasesGases Material has neither a definite shape nor a Material has neither a definite shape nor a
definite volumedefinite volume Gas takes the shape and volume of its Gas takes the shape and volume of its
containercontainer Gases can be compressed or expanded Gases can be compressed or expanded
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Other states of matterOther states of matter On Earth, almost all matter exists as a On Earth, almost all matter exists as a
solid, liquid or gas; at extremely high solid, liquid or gas; at extremely high temperatures plasma exists temperatures plasma exists
Plasma – ionized gas (more in Ch 10) Plasma – ionized gas (more in Ch 10) BEC (Bose-Einstein condensate) – occurs BEC (Bose-Einstein condensate) – occurs
at absolute zero (-273at absolute zero (-273°C) °C) A group of atoms behaving a one single A group of atoms behaving a one single
particle particle • Still not fully understood Still not fully understood
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OTHER STATES OF MATTEROTHER STATES OF MATTER
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Kinetic TheoryKinetic Theory
Kinetic energy – energy an object has due Kinetic energy – energy an object has due to motionto motion
Kinetic theory of matter – all particles of Kinetic theory of matter – all particles of matter are in constant motionmatter are in constant motion
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Particles in a SolidParticles in a SolidA solid is made up of particles which vibrate around a fixed or central position
Particle of a solid
Particles do not swap positions in a solid
A B
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Particles in a LiquidParticles in a LiquidA liquid is made up of particles which move about and hit each other
A liquid particle
Particles can swap position in a liquid by moving past each other
AB
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Particles in a gasParticles in a gasA gas is made up of particles which move about much more quickly than in a liquid and often hit each other, they are in constant, random motion
A gas particle
It is the particles colliding with the sides of a container which cause the pressure
A
B
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Copy on your notes and replace each letter with one of these phrases: Definite volume, Variable volume, Definite shape, Variable shape
Solid Liquid Gas
A_______
B ___________ C ________
D ________
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Copy on your notes and replace each letter with one of these phrases: Definite volume, Variable volume, Definite shape, Variable shape
Solid Liquid Gas
Definite Shape Definite
Volume
Variable Shape
Variable Volume