Chpt 5 Units of Weight & Measurements
Terms
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Apothecaries' weight
grains gr
minims m
drams dr
ounces oz
pounds lb (12oz.=lb) - system used for measuring and weighing drugs and solutions, precious metals, and precious stones
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Avoirdupois weight
drops gtt
teaspoon tsp
tablespoon T
ounces oz
pound lb (16 oz = 1 lb) - The system of measuring & weighing used in English-speaking countries for all commodities except drugs, precious stones, and precious metals
- Metric system
- A system of weighing and measuring based on the meter and having all units based on the power of ten
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a trillion times is
tera T
10 to the ? -
... T trillion times
10 to the 12 -
giga G
...... times
ten to the ? -
... G billion times
10 to the 9th -
mega m
is how many times
is ten to the ...? -
... m million times 10 6
is ten to the 6 -
kilo k
is how many times
is ten to the ...? -
... k thousand times
is ten to the 3rd or 10 3rd -
hecto h is
how many times
is ten to the what? -
... h is hundred times
10 to the 2nd - deka dk is how many times?
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... dk ten times
is ten to the first or 10 to 1st -
deci d is how many tenths?
deci is how much of a unit -
... d is
1/10 of a unit 10 to the -1 - centi c is what in tens?
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...c is
1/100 of a unit or 10 to the -2 - milli m is how many 10s?
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... m is
1/1000 of a unit or 10 to the -3 - micro µ is how many 10s?
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... m is
1/1,000,000 or 10 to the -6 - nano n is how many 10s:
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... n is
1/1,000,000,000 or 10 to the -9 - pico p is ... how many 10s?
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... p is
1/1,000,000,000,000 or
10 to the -12 -
Metric Weight:
microgram µg or mcg is ... mg -
... µg or mcg is:
1000 = 1 milligram (mg) - milligram mg is ... g
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... mg is
1000 mg = 1 gram (g or gm) - centigram cg is ... g
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... cg is
100 cg = 1 g - decigram dg is ... g:
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... dg is
10 dg = 1 g - gram g or gm is ... g
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...g is
1 g = 1 g - dekagram dkg is ... g:
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... dkg
1 dkg = 10 g - hectagram hg is ... g
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... hg is
1 hg = 100 g - kilogram kg is ... g
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... kg
1 kg = 1000 g -
Metric Length:
millimeter mm is ... m -
... mm
1000 mm = 1 meter (m) - centimeter cm is ... m
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... cm
100 cm = 1 m - decimeter dm is ... m
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... dm
10 dm = 1 m - meter m is how many m?
- 1 m = 1 m
- dekameter dkm is ... m?
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... dkm
10 m = 1 dkm - hectometer hm is ... m
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... hm
100 m = 1 hm - kilometer km is ... m
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... km
1000 m = 1 km -
Metro Volume:
cubic centimeter cc is ... mL -
... cc
1 cc = 1mL (millimeter) - milliliter ml or mL is ... L
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... mL
1000ml = 1 L (liter) - centiliter cl is ... L
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... cL
100 cL = 1L - deciliter dl is ... L
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... dL is
10 dL = 1L - liter L or L
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...L
L is 1 L - dekaliter dkl is ... L
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... dkl
10 L = 1 dkl - hectoliter hL is ... L
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... hL
100L = 1 hL - kiloliter kL is ... L
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... kL
1000 L = 1 kL -
Equivilants (equal to):
weight µg / mg
mg/g
g/kg
kg/lb -
1000 µg = 1 mg
1000 mg = 1 g
1000g = 1 kg
1kg = 2.2 lb - length cm/in is in. = ...cm
- 2.5 cm = 1 in.
- volume mL/cc/L
- 1000 mL = 1000 cc = 1 L
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Energy:
joule J -
1 J = 0.24 c
What is J? - calorie c is ... J
- 1 c = 4.18 J
- Temperature: ºT
- the degree (º) of sensible heat or cold expressed in terms of a specific scale
- Celsius ºC
- scale at which boiling is 100 and freezing is 0
- fahrenheit ºF
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scale where freezing is 32º
boiling is 212º - conversion of C to F
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times 9, divide by 5, add 32
ºF = (ºC X 9/5) + 32 - conversion of F to C
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subtract 32, times 5, divide by 9
ºC = (ºF - 32) X 5/9