Study
Review All
Quiz!
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eye wash |
immediately flush contaminants out of eyes after exposure. |
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safety blanket |
smothers the person to keep oxygen from continuing to fuel the fire. |
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safety shower |
wash off chemicals or corrosive substances from the skin. use it for at least 15 minutes |
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K (Kilo) |
thousand |
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H (Hecta) |
hundred |
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D (deka) |
ten |
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Base (gram, liter, meter) |
one |
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d (deci) |
1/10 |
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c (centi) |
1/100 |
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m (milli) |
1/1000 |
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feet per mile |
5280 |
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centimeters per inch |
2.54 |
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quarts per liter |
1.06 |
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grams per pound |
454 |
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pounds per kilgram |
2.2 |
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Avagadro's number |
6.02 x 10^23 |
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Density of water |
1 gram per milliliter |
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extrapolation |
process of constructing data points outside a discrete set of known data points |
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interpolation |
process of constructing data points inside a discrete set of known data points |
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significant digits in 6039.1002000 |
4 |
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significant digits in 3.09020345000 |
8 |
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mechanical waves |
require media. |
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types of mechanical waves |
longitudinal (ex sound) |
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longitudinal waves |
particles of the medium dont move, just oscillate. |
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transverse waves |
medium moves from side to side. |
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compressions |
increase in density from waves |
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rarefactions |
decrease in density from waves |
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electromagnetic waves |
dont require a medium, but can use it if its there. |
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list waves from least to most energetic |
radio, micro, infra, light, x, gamma |
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trough |
the bottom of the wave |
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crest |
the top of the wave |
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wavelength |
distance from one part of a wave to the corresponding part of the same wave. |
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waves |
disturbances of vibrations that carry energy from place to place. not matter. |
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how to solve for period |
1 / frequency |
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how to solve for frequency |
1 / period |
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how to solve for wavelength |
velocity / frequency |
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how to solve for velocity |
frequency x wavelength |
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atomic number = |
number of protons |
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number of protons = |
# of electrons in a NEUTRAL atom. also = atomic # |
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if protons and electrons are not equal, then |
the atom is charged, called an Ion. |
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if you gain an electron you are |
more negative |
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if you lose an electron you are |
more positive |
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protons + neutrons = |
mass number |
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2 atoms with the same number or protons but different neutrons = |
isotope |
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average mass of all isotopes |
atomic mass |
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valance electrons |
electrons on outer energy lever. count to 8. in families 1, 2, 13, 14, 15, 16, 17 & 18. |
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octet rule |
atoms will gain, lose or share electrons to have the electron configuration of the nearest noble gas. |
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law of conservation of mass |
mass is neither created nor destroyed during a chemical reaction, just reorganized. |
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oxidation number |
apparent sum of the charges of an atom in a compound. the # of electrons that an element would either gain of lose if in an ionic bond and the resulting charge. Metals tend to have positive oxidation #s, the opposite for non metals. |
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diatomic elements |
H (hydrogen) |
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exothermic |
feels hot |
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endothermic |
feels cold |
