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A vocabulary-style set of flashcards covering key concepts from chemistry, measurements, SI units, and accuracy vs. precision.
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Chemistry
The science of matter and its changes; described as a way of life and present in everyday activities like cooking and making tea.
Measurement
The process of determining the size, amount, or extent of something using units (mass, length, time, temperature, etc.).
SI units
International System of Units; global standard for measurements used to ensure consistency in data reporting.
Base SI units
The fundamental SI units: kilogram (mass), meter (length), second (time), and kelvin (temperature).
Kilogram
SI base unit of mass.
Meter
SI base unit of length (symbol m).
Second
SI base unit of time (symbol s).
Kelvin
SI base unit of temperature (absolute scale, symbol K).
Gram
Metric unit of mass; 1 kilogram = 1000 grams.
Milliliter
Unit of volume equal to 1 cubic centimeter; 1 L = 1000 mL.
Derived units
Units formed from base units by combining them (e.g., speed is distance per time: m/s or mph).
Speed / Velocity
Distance per unit time; common units include m/s and mph.
Fahrenheit
Temperature scale used in the Fahrenheit system (symbol F).
Celsius
Temperature scale used in the Celsius system (symbol C).
Accuracy
How close a measured value is to the true value.
Precision
How close multiple measurements are to each other (consistency).