Science Vocab Ch. 3 Flashcards
a nonsolid state of matter in which the atoms or molecules are free
to move past each other, as in a gas or liquid
fluid
in physical science, a state of matter that consists of free-
moving ions and electrons; a plasma’s properties differ from the properties
of a solid, liquid, or gas
plasma
the capacity to do work
energy
a measure of how hot (or cold) something is; specifically,
a measure of the average kinetic energy of the particles in an object
temperature
the total kinetic energy of a substance’s atoms
thermal energy
the change of state from a liquid to a gas
evaporation
the process in which a solid changes directly into a gas
(the term is sometimes also used for the reverse process)
sublimation
the change of state from a gas to a liquid
condensation
the SI unit of pressure; equal to the force of 1 N exerted over an
area of 1 m2 (symbol, Pa)
pascal
the amount of force exerted per unit area of a surface
pressure
force the upward force that keeps an object immersed in or
floating on a fluid
buoyant
the resistance of a gas or liquid to flow
viscosity
the laws that state the mathematical relationships between
the volume, temperature, pressure, and quantity of a gas
gas laws
