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Ch1 Chem vocab

TermDefinition
macroscopic the big picture, what we see with the naked eye
microscopic on the particle perspective
symbolic symbolic representations: equations, formulas
matter anything that has mass and can be observed
physical properties doesn't change identity of substance
density ratio of mass to volume
chemical properties types of chemical changes a substance undergoes
combustion burning oxygen in a chemical reaction
malleability ability to be rolled and hammered into sheets
phases common states: solid, liquid, gas
atoms particles that can't be any smaller
molecules groups of atoms held together: identity different from individual atoms
precision spread of values obtained through measurement
accuracy how close observed value to "true" value
random error limitations to equipment
systematic error consistently too high or too low: unknown bias
deductive reasoning 2+ statements so irrefutable conclusion drawn
inductive reasoning series of specific observation and making generalizations
model empirical description
theory explanation grounded in fundamental principle
ppm parts per million
ppb parts per billion
elastic modulus stiffness measurement: stress to strain
yield strength amount of force required for specified deformation of material
Created by: brittanyallers