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Monroe Harless
Intro
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States of matter are the visible forms that matter appears as
These states are usually recognizable in everyday life
○ Solids- molecules are precisely patterned and close together
○ Liquids- molecules are still tight but move freely
○ Gas- molecules are fluid and spread apart
While they are identified primarily by their differences, the states of matter also share many
similarities
Paragraph 1: Solids
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Characteristics- defined shape, don’t flow, defined volume and mass
○ Ex; ice, wood, brick
Two types
○ Crystalline
■ Most common, particles are in a patterned and defined sequence
○ Amorphous
■ Atoms are arranged in a random and irregular order
Molecular motion- packed tightly together, vibrate in place
Thermal energy- lowest of three
Transition of a solid to a liquid- melting, endothermic
Transition from a liquid to a solid - freezing, exothermic