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28 Cards in this Set
- Front
- Back
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The study of matter and the changes that it under goes describes the science of?
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Chemistry
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Si unit of length
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meter
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Si unit of mass
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kilogram
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Si unit of volume
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cubic meter
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Si unit of volume
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cubic meter
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Scientific method is a way of answering what?
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Questions about the world around us.
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Measurements are always ____ because measuring instruments are never flawless.
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Uncertain
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Measurements in science need to have both high ____ and high ____.
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Precession, accuracy.
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Energy is the capacity to do ___ or to ____ _____.
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work, produce heat.
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Three basic categories of energy are.
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Radiant, kinetic, and potential.
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Si unit of energy
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Joule
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Law of conservation of matter.
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No matter is neither created nor destroyed in any process.
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Si unit of Temperature
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Kelvin
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The zero point on the Kelvin cycle is called what?
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Absolute zero.
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Matter is anything that has ____ and ____.
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Mass and Volume.
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Elements are substances that can not be what?
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Broken into simpler substances.
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Compounds are substances that contain what?
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Two or more elements combined in a fixed portion.
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A mixture is a blend of what?
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Two or more pure substances.
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Heterogenous can be separated how?
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Filtration.
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Homogeneous can be separated by what?
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Distillation
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Atoms are what?
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The smallest particles of an element that retain the chemical identity of that element.
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Who discovered radioactivity?
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Becquerel
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Thomas conclude what?
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That cathode ray consists of negatively charged particles.
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Rutherford did what experiment?
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Alpha scattering experiment.
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The number of protons in an atom is called what?
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Atomic number
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What is ion?
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An ion is an element that has a gain or loss of an electron.
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Unstable nuclei may emit what?
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Alpha, beta, or gamma radiation.
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Light exhibits properties of both what?
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Particles and waves.
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