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Chemistry chapter 1

TermDefinition
Weight Measurement of a amount of matter and gravitational pull
Model Visual, verbal, or mathematical explanation of data
Base unit Defined unit based on a object or event
Time Second (s)
Length Meter (m)
Mass Kilogram (kg)
Temperature Kelvin (K)
Amount of substance Mole (mol)
Electric current Ampere (A)
Luminous intensity Candela (Cd)
Derived unit Combination of base units
Volume Space a substance occupies
DensityAmount of mass per volume Amount of mass per volume -Mass/volume -> g/cm^3
Scientific notation Making a number between 1-10
Dimensional analysis Unit conversion
Conversion factor Equivalent values with different units 1 hour=60 mins
Accuracy How close to an accepted vales -There is an animal in the school hallway
Precision How detailed a measurement is (more decimal places and/or smaller units) -An 85lb golden retriever is going to be running around in the hallway today
Accurate and precise Accurate and precise Ex. There's a golden retriever visiting an elementary classroom
Error Measure of accuracy -Error= experimental value- accepted value - can be + (too big) or - (too small) -Equation: percent error |error| / accepted value x 100
Sig Figs Measure of precision
Sig fig rules 1. All non-zero digits are significant (1-9) 2. All final zeros right of the decimal are significant (3.0) 3. All zeros between sig figs are significant (205) (205.06) 4. Placeholder zeros are NOT significant (20) (20.0) 5. Counting numbers, defined c
Chemistry The study of matter and how matter changes
Theory Explanation of a natural phenomenon based on many observations and investigations over time
Scientific law A theory that has remained consistent throughout much experiment
Pure research To gain knowledge for the sake of knowledge itself
Applied research Scientific study that aims to solve practical problems
Substance Matter with a definite and uniform composition
Mass Measurement of an amount of matter
Created by: schin2
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