Summary: The States Of Matter
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8 Chemisty: The states of matter
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is it possible to live in a world without any of this states of matter. explain why
no because the earth is a solid and your bones are a solid. liquids flow through your arteries, veins and intestines. when you breath in, air - hat mixture of gases- fills your windpipe and your lungs. -
comparing the states of matter (properties of matter)
mass
shape
crompressable
solid
definite
definite
Hard to compres
liquid
definite
Same as container
Hard to compres
Gas
definite
Can the same as container
Easy to compres
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8.1 the first ideas about matter
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why was the discovery of how to make fire important in making people think about the structure of materials ?
you can change the structure of materials whit fire.
voorbeeld : they learnd how to heat some rocks in charcoal fires so strongly that a chemical reaction took place in which a metal was produced..
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why were the Greeks' conclusions about matter not scientific.
they think about it but they never really did it. -
in what ways do you think Thales saw water change?
into ice and into water vapour. -
what was the idea of democritus about the structure of materials?
he took a substance and divided in two, then divided he each in two, and then carried on dividing. he believed that eventually a tiny piece would be produced that was too small to be divide any more. -
how can you see the arrangement of individual atoms.
with a microscope. -
8.2 the particle theory of matter
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what means the particle theory
the paricle theory states that matter is made from particles. -
how do you call particles
atoms and molecules -
8.3 particles in the three states of matter
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According to the particle theory, why do liquids flow but solids do not?
Strong forces hold the particles together in a solid.
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