Unit A Part 1 Quizlet
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A combination of two or more substances that are not chemically combined.
A mixture that does not have the same composition and properties throughout; parts of the mixture are noticeably different from one another.
A mixture in which substances are similar in size and evenly distributed throughout the mixture.
A substance made of only one kind of element or molecule and cannot be physically separated
measures the average speed of particles
Anything that has mass and takes up space
If you add enough of this to a substance, then the attraction between particles can be broken, changing the state of the substance
heat is added to a substance (absorbed)
Heat is removed (released) from a substance
super-heated and excited "gas" that has lost its electrons due to increased energy
Bose-Einstein Condensate (BEC)
particles have almost no motion and clump together in this state of matter due to temperatures at almost absolute zero
At this point, all particle motion will stop
How the mass of a solid substance would compare to the mass of the same substance when it melts.
particle model theory
States that all matter is made of particles, particles are always moving, there are spaces between particles, and that changing temperature affects the movement of particles.
the smallest unit of matter (that retains its properties)
Kinetic Molecular Theory
States that all matter is composed of particles (atoms and molecules) moving constantly in random directions
a solid turns into a liquid
a liquid turns into a gas
a solid turns into a gas without turning into a liquid
a gas turns into a liquid
a liquid turns into a solid
A pure substance made of two or more atoms bonded together
acronym for how to use a fire extinguisher