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Definition
| Science that seeks to understand what matter does at an atomic and molecular level. |
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| Anything that has mass and occupies space. |
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| collection of data under controlled or defined conditions. Used to validate hypothesis |
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| a substance that always has the same properties and composition where ever it is found. |
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| Educated guess explaining observations. |
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| Tested explanation. Many experiments have supported theories. |
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summary of observation.
Combines all past observations. |
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Definition
| Value: 10^6, or 1 million units |
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can be in grams (g), meter (m), liters (L), seconds (s), etc.
One unit. |
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10^-2,
or
1/100, or 0.01 units |
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| micro- (weird u thingy, called mew) |
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10^-6
or
1/1000000
or
.000001 |
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10^-9
1 billionth of a unit |
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Definition
10^-12,
or
1 trillionth of a unit |
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| Difference between mass and weight |
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Definition
| weight takes into account the force of gravity. Mass is just the object regardless of gravitational pull |
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| Exact numbers vs measured numbers |
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Definition
Exact: defined or counted.
Measured: has some uncertainty |
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Definition
all digits we can read plus or minus best guess digit. applied to measure numbers only.
All non-zero numbers are significant.
zeros at end of number are significant.
zeros preceding non-zero number are NOT significant |
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Definition
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Definition
Matter cannot be created nor destroyed.
Mass begin with = mass end with |
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| ability to supply heat and/or do work. |
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Definition
energy due to motion of particles
temp effects this. |
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Definition
| due to position. Stored in bonds. |
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| conversions of energy units |
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Definition
1 calorie = 4.184 joules
1 kcal = 1000 cal
1 kJ = 1000 J |
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Definition
Fahrenheit = (1.8 * Celsius)+32
Celsius = Kelvin - 273 |
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