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Ch. 2 Chemistry and Measurements

Terms in this set (73)

meter (m), meter (m)
Unit of measurement and abbreviation for metric and SI system of length, respectively
liter (L), cubic meter (m^3)
Unit of measurement and abbreviation for metric and SI system of volume, respectively
gram (g), kilogram (kg)
Unit of measurement and abbreviation for metric and SI system of mass, respectively
degree Celsius (C), kelvin (K)
Unit of measurement and abbreviation for metric and SI system of temperature, respectively
second (s), second (s)
Unit of measurement and abbreviation for metric and SI system of time, respectively
2.54
how many centimeters in 1 inch
weight
a measure of the gravitational pull on an object
National Institute of Standards and Technology (NIST)
the standard kilogram for the US is stored at the...
0
Water freezes at what degree Celsius?
100
water boils at what degree Celsius?
32
water freezes at what degree Fahrenheit?
212
water boils at what degree Fahrenheit?
0 K
lowest possible temperature on the kelvin scale
peta 10^15
write the prefix + scientific notation for the symbol P
tera 10^12
write the prefix + scientific notation for the symbol T
giga 10^9
write the prefix + scientific notation for the symbol G
mega 10^6
write the prefix + scientific notation for the symbol M
kilo 10^3
write the prefix + scientific notation for the symbol k
deci 10^-1
write the prefix + scientific notation for the symbol d
centi 10^-2
write the prefix + scientific notation for the symbol c
milli 10^-3
write the prefix + scientific notation for the symbol m
micro 10^-6
write the prefix + scientific notation for the symbol mcg
nano 10^-9
write the prefix + scientific notation for the symbol n
pico 10^-12
write the prefix + scientific notation for the symbol p
femto 10^-15
write the prefix + scientific notation for the symbol f
1 mL
1 cubic centimeter has the same volume as...
milligrams per kilogram (mg/kg)
the ratio of parts per million (ppm) is the same as...
micrograms per kilogram (mcg/kg)
the ratio of parts per billion (ppb)
1.00 g/mL @ 4 degrees Celsius
density of water
hydrometer
used to measure the specific gravity of urine
Celsius temperature scale
a temp. scale on which water has a freezing point of 0 degrees C and a boiling point of 100 degrees C
centimeter (cm)
a unit of length in the metric system; there are 2.54 centimeters in 1 inch
conversion factor
a ratio in which the numerator and denominator are quantities from an equality or given relationship
cubic centimeter (cm^3)
volume of a cube that has 1 cm sides; 1 cm^3 = 1 mL
density
relationship of the mass of an object to its volume expressed as grams per cm^3 (g/cm^3), grams per milliliter (g/mL), or grams per liter (g/L)
equality
relationship between 2 units that measure the same quantity
exact number
number obtained by counting or by definition
gram
metric unit for mass
international system of units (SI)
an international system of units that modifies the metric system
kelvin
a temperature scale on which the lowest possible temperature is 0 K
kilogram (kg)
metric mass of 1000 grams, equal to 2.2 lbs (SI standard unit of mass)
liter (L)
metric unit for volume that is slightly larger than a quart
mass
measure of the quantity of material in an object
measured number
a number obtained when a quantity is determined by a measuring device
meter
metric unit for length that is slightly longer than a yard (SI standard unit for length)
metric system
system of measurement used by scientists and in most countries of the world
milliliter (mL)
metric unit of volume equal to 1000th of a liter
prefix
part of the name of the metric unit that precedes the base unit and specifies the size of the measurement
second (s)
a unit of time used in both SI and metric systems
significant figures
numbers recorded in a measurement
specific gravity
relationship between the density of a substance and the density of water
temperature
an indicator of the hotness or coldness of an object
volume
the amount of space occupied by a substance
true
when the measured number 0.0090 is multiplied by the measured number 87.10, the answer has 2 significant figures
260 in
what is 6.5 m converted to inches
1.33 g/mL
a liquid has a volume of 34.6 mL and a mass of 46.0 g. what is the density of the liquid
19.3 g/mL
a nugget of gold with a mass of 521 g is added to 50.0 mL of water. the water level rises to a volume of 77.0 mL. what is the density of the gold?
false
the number 0.0500 has 4 sig figs
density
which of the fllowing is used to determine an individual's percentage of body fat
false
1 kg is the same as 1000 mg
microgram
which of the following is the smallest unit
false
the basic unit of mass in the metric system is the pound
true
the liter is a unit of volume in the metric system
liter
the metric unit for volume is the
424
a calculator answer of 423.6059 must be rounded off to 3 sig figs. what answer is reported
0.66
what is the correct answer for the calculation 36 x 0.12345 / 6.77
cm x 1 in / 2.54 cm x 1 ft / 12 in
which of the following setups would convert centimeters to feet
false
the density of water is 1kg/mL
64.0 mL
what is the volume of a cube that measures 4.00 cm on each side
1.050 mL
a researcher added 3 samples of NaCl solution; the volumes were: 0.351 mL, 0.350 mL and 0.349 mL. the total volume should be reported as
volume
the amount of space occupied by a substance is its
10 mm/1 cm
what is the conversion factor for the relationship between millimeters and centimeters
kilometer
which of the following is the largest unit
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