Chemistry Unit 7: Measurements Study Guide
Studied by 69 people
Learn
Practice Test
Spaced Repetition
Match
Flashcards1/36
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
37 Terms
density
Mass per unit volume of matter
density equation
d = m/V
density of water
max = 1.0 g/mL at 4 degrees Celsius
heat
amount of energy that a material contains; depends on the quantity of material
temperature
measure of the degree of "hotness" of a material; does not depend on the quantity of material
Celsius to Fehrenheit
multiply by 9/5 and add 32
Fahrenheit to Celsius
subtract 32 and multiply by 5/9
Celsius to Kelvin
add 273
precision
degree of reproducibility of a measurement. (repeat measurements several times and get the same value each time)
accuracy
degree to which a measurement represents the true value of what is measured
systematic error
produces values that are either all higher or all lower than the actual value
random error
produces some values that are higher and some values that are lower than the actual value
percentage error
((absolute value of (Measured Value minus True Value)) divided by True Value) times 100
dimensional analysis
(information given)(conversion factor) = information sought
SI Unit of Length
Meter (m)
SI Unit of Mass
Kilogram (kg)
SI Unit of Time
Second (s)
SI Unit of Electrical Current
Ampere (A)
SI Unit of Temperature
Kelvin (K)
SI Unit of Amount of Substance
Mole (mol)
SI Unit of Luminous Intensity
Candela (cd)
how many units in 1 mega (M) unit
10^6 units
how many units in 1 kilo (k) unit
1000 units
10 deci (d) unit
how many deci units in 1 unit
100 centi (c) unit
how many centi units in 1 unit
1000 milli (m) unit
how many milli units in 1 unit
10^6 micro (μ) unit
how many micro units in 1 unit
10^9 nano (n) unit
how many nano units in 1 unit
10^12 pico (p) unit
how many pico units in 1 unit
2.54 cm
how many cm in 1 in
10 mm
how many mm in 1 cm
454 g
how many g in 1 lb
1.06 qt
how many qt in 1 L
1 mL
how many mL in 1 cm^3 and 1 cc
1 L
how many L in 1 dm^3
How to determine # of sigfigs in the answer when multiplying/dividing
# of sigfigs in the number with less sigfigs
Rules for sigfigs when adding/subtracting
same exponents; same amount of digits to the right of the decimal point