Chapter 3 Vocabulary Flashcards
Scientific Notation
A number written as a coefficient and a power of 10
Accuracy
The measure of how close a measurement comes to the actual or true value of whatever is measured
Precision
How close a series of measurements are to one another
Accepted Value
Correct based on reliable references
Experimental Value
The value measured in the lab
Error
The difference between the experimental value and the accepted value
Percent Error
|error|
Percent Error=———- x 100%
Accepted value
Significant Figures
Include all known digits and one estimated digit
International System Of Units
A revised version of the metric system
Meter
SI unit of length
Liter
SI unit of volume
Kilogram/Gram
SI units of mass
Temperature
A measure of how hot or cold an object is
Kelvin/Celcius
SI measures of temperature
Absolute Zero
0K or -273°C
Energy
The capacity to do work and produce heat
Joule
SI unit of energy
Calorie
The quantity of heat that raises the temperature of one g of pure water by 1°C
Conversion Factor
A ratio of equivalent measurements
Dimensional Analysis
A way to analyze and solve problems using units of measurements
Density
The ratio of the mass of an object to its volume
Mass
Density = ———-
Volume
Measurement
A quantity that has both a number and a unit
