Term
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Definition
-same molecules
-change orientation of molecules
-reversible |
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Term
| How to Make a Physical Change |
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Definition
-cutting something
-stretching something
-mixing something
-phase change: solid -> liquid -> gas (or the other way around) |
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Term
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Definition
-results in different molecules
-a chemical reaction needed to reverse it
-new substances are formed |
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Term
| How to Make a Chemical Change |
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Definition
-color change
-forming a gas
-forming a solid
-temperature change |
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Term
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Definition
| -particles closely packed orderly arrangements |
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Term
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Definition
| -particles move faster & are more disorganized |
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Term
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Definition
| -particles move fast & are in chaos |
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Term
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Definition
-boils at 100 degrees celsius
-freezes at 0 degrees fahrenheit |
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Term
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Definition
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Term
| Examples of Physical Changes |
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Definition
-Aluminum foil cut in half
-clay is molded into a new shape
-butter belts on warm toast
-water evaporates from the surface of the ocean
-a juice box in the freezer freezes
-rubbing alcohol evaporates on your hand
-cream is whipped
-tomato is sliced
-fruit is blended
-chocolate is melted
-ice cream is made
-water becomes ice |
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Term
| Examples of Chemical Changes |
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Definition
-milk goes sour
-jewelry tarnishes
-bread becomes toast
-rust forms on a nail left outside
-gasoline is ignited
-hydrogen peroxide bubbles in a cut
-a candle is lit
-cookies are baked
-eggs are fried
-food coloring goes into water
-wood turned into paper |
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Term
| What clues or observations make you decide that something is a chemical change? |
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Definition
-if something was bubbling
-if something was foaming
-if somethings was burning |
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Term
| Are clues indicating a chemical change always reliable? |
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Definition
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Term
| How do you decide if something is a physical change |
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Definition
-if the object looks the same
-if an object dissolves
-if something stays the same
-if the color doesn't change |
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