Semester Test Flashcard

Lambda
upside down y–Wavelength
Nu
The V.–Frequency
Hertz
SI Unit of cycles per second
C
Constant
Amplitude
The wave’s height from zero to the crest
Ernest Rutherford
Nuclear model of the atom
Democritus
“atomos” invisible particles
John Dalton
Atomic theory
J.J. Thomson
Cathode ray tube
Applied Science
Research that is directed toward a practical goal
Chemistry
study of the composition of matter and the changes that matter undergoes
Pure Chemistry
persuit of chemical knowledge for its own sake
Extensive Properties
Depend upon the amount of matter
Intensive Properties
Don’t depend on amount of matter
Physical property
Quality or condition of a substance that can be observed or measured without changing the substances composition
Physical Change
Change which properties of the matter may change but the composition remains the same
Heterogeneous
The composition isn’t uniform throught one component can be distinguished from another
Homogeneous
uniform throughout
Significant figures
in a measurment include all the digits that are known, plus a last digit that is estimated
Percent error
Absolute value of the error divided by the accepted value, multiplied by 100
Joule
SI Unit of energy
Celcius
Kelvin-273
Kelvin
Celcius+273

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