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Physical Changes and Chemical changes are the 2 types of changes. A physical change is a change in the size, shape or state of matter.  Ex:  Breaking glass, cutting wood, grating cheese, crumpling up paper A chemical change is a change of one substance into new substance(s).  Ex:  Burning wood, rotting, tarnishing silver, rusting iron
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The atomic radius decreases across a period from left to right and increases down in a given group. That means that since the lower the element is in a group, the larger the atomic radius will be.  The atoms with the largest atomic radii are located in Group I and are at the bottom of groups.
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There are many different types. Some stay relatively small like the gold lantana. There's a white and purple version that stay relatively small, but spread out, but they aren't as hardy. There are larger versions that can be tall--like 5 feet tall and spread out a lot that have multi colored blooms.
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Saturated-contains the maximum amount of solute dissolved at a given temp.Unsaturated-can dissolve more solute at its current temperatureSupersaturated-has been heated to dissolve more solute than a saturated solution, then is cooled.
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The density of a substance is the mass per unit of volume, or the mass divided by the volume. It's sort of like how tightly packed the particles are in one substance. Concentration involves solutions--how much solute is dissolved in a given amount of solvent. You can make a concentrated solution of Kool Aid by … Read more