Question | Answer |
what is a solid? liquid? gas? | a solid is a state of matter in which materials have a definite shape and a definite volume. a liquid is the state of matter in which a material has a definite volume but not a definite shape. gas has no definite hsape or volume. |
what is kinetic energy? give an example. what does it say about kinetic energy and its particles? | kinetic energy is the energy an object has due to its motion. a ball being thrown has kinetic energy. "the kinetic theory of matter says that all particles of matter are in constant motion." |
how to gasses move? | they move around fast and all over the place, scattering nad very fast. there are forces of attraction among the particles of all matter. |
what is the kinetic theory of gasses? | the constant motion of particles in a gas allows a gas tp fill a container of any shape or size. |
explain the behavior of a liquid. | a liquid takes the shape of its container because particles in a liquid can flow to new locations. the volume of a liquid is constant because forces of attraction keep the particles close together. |
explain the behavior of a solid. | solids have a definite volume and shape because particles in a solid vibrate around fixed locations. |
what is pressure? | pressure is the result of a force distributed over an area. |
what is absolute zero? | is a temperature of zero kelvins. |
what is charles law? | states that the volume of a gas is directly proportional to its temperature in kevins if the pressure and the number of the particles of the gas are constant. |
boyles law? | states taht the volume of a gas is inversly proportional to its pressure if the temperature nad the number of particles are constant. |
phase changes? | is a reversible pohysical change that occurs when one substance changes to another. |
endothermic? | its a change when the system of a material absorbs energy from its surroundings. |
heat fusion? | the amount of energy for water. |
exothermic? | its a change where the system of a material releases enery to its surroundings. |
vaporization? | the phase change in which a substance changes from a liquid into a gas. |
heat of vaporization? | the amount of energy absorbed when a liquid changes into a gas. |
evaporation? | is the process taht changes a substance from a liquid into a gas at room temperature. |
vapor pressure? | the pressure caused by the collisions of this vapor |
condensation? | the phase change in which a substance changes from a gas to a liquid. |
sublimation? | the phase change in which a substance changes from a solid to a gas or vapor without changing into a liquid first. |
deposition? | a phase change in which a gas or vapor changes directly into a solid without changing into a liquid first. |