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describe look and feel of a substance. ex, color, texture, hardness, softness.
They can change when conditions change. Does not mean a new substance was created. |
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| Further heating causes liquid particles to moves so fast the attractions are no longer able to hold them together, so they separate and form a gas. |
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| When heat is added, the vibrations of atoms increase until rapid enought to disrupt the fixed arrangement. Have the ability to flow. |
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| study of matter and the transformation it undergoes. |
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| the attraction between atoms are strong enough to hold all the particles together in a fixed, 3D arrangement. |
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| not man-made, naturally occurring. |
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| anything that has mass and takes up spce. Solids, liquids, gases |
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A combination of two or more substances in which each substance retains its own properties. (Salt and water, oil and water, seltzer water, trail mix)
Mixtures are physical-not a new substance. |
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Material in which atoms of different elements are bonded to one another-H2O
A chemical change-new and different |
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Filtration-separation using a filter
Distillation-a purifying process in which a vaporized substance is collected by exposing it to cooler temperatures over a receiving flask which collects the condensed, purified liquid.
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in these mixtures, the different components can be seen as individual substances
ex: trail mix
pulpy orange juice |
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| components in these mixtures have same composition throughout. ex: homogenized milk, blood |
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All components are in the same phase, i.e. sea water.
1. solvent-the components present in the largest amount.
2. solute. any other component.
sea water is solvent. solute-sale and minerals. these can distill solutions to separate them. This is homogenous. |
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When diffferent components are in different phases but cannot be readily distinguished.
Milk, blood-can't distinguish them. you can use centrifugal force to separate them.
All mixtures can be separated somehow.
these are homogenous |
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