Two factors determine whether a substance is a solid, a liquid, or a gas:
The kinetic energies of the particles
(atoms, molecules, or ions) that make up a substance. … The attractive intermolecular forces between particles that tend to draw the particles together.
What does the phase of a substance depend on?
Most substances have three distinct phases: gas, liquid, and solid. Phase changes among the various phases of matter depend on
temperature and pressure
. The existence of the three phases with respect to pressure and temperature can be described in a phase diagram.
What determines a phase?
Phase, in thermodynamics,
chemically and physically uniform or homogeneous quantity of matter
that can be separated mechanically from a nonhomogeneous mixture and that may consist of a single substance or a mixture of substances.
What determines the phase of a sample of matter?
All particles have energy, and the energy varies depending on
the temperature
the sample of matter is in, which determines if the substance is a solid, liquid, or gas. … The average amount of empty space between molecules gets progressively larger as a sample of matter moves from the solid to the liquid and gas phases.
What determines whether a substance changes phase?
The nature of the phase change depends on
the direction of the heat transfer
. Heat going into a substance changes it from a solid to a liquid or a liquid to a gas. Removing heat from a substance changes a gas to a liquid or a liquid to a solid.
At what temperature will the three phases of matter coexist?
Triple point of water
The single combination of pressure and temperature at which liquid water, solid ice, and water vapor can coexist in a stable equilibrium occurs at exactly
273.1600 K (0.0100 °C; 32.0180 °F)
and a partial vapor pressure of 611.657 pascals (6.11657 mbar; 0.00603659 atm).
What are the six phases of matter?
There are at least six:
solids, liquids, gases, plasmas, Bose-Einstein condensates
, and a new form of matter called “fermionic condensates” just discovered by NASA-supported researchers.
What is pressure at a triple point of water?
noun. chem the temperature and pressure at which the three phases of a substance are in equilibrium. The triple point of water, 273.16 K at a pressure of
611.2 Pa
, is the basis of the definition of the kelvin.
What is the triple point on a phase diagram?
phase diagram
…the three curves, called the triple point,
represents the unique conditions under which all three phases exist in equilibrium together
. A phase diagram for two components usually shows melting curves on a temperature-composition diagram.
Which factor determines the state of matter in which a substance exists?
The amount of energy in molecules of matter
determines the state of matter. Matter can exist in one of several different states, including a gas, liquid, or solid state.
What are the 7 phases of matter?
The seven states of matter that I am investigating are
Solids, Liquids, Gases, Ionized Plasma, Quark-Gluon Plasma, Bose-Einstein Condensate and Fermionic Condensate
. Solid Definition – Chemistry Glossary Definition of Solid.
Which phase is denser solid or liquid?
The solid phase is more dense than the liquid phase
. The line that separates solid and liquids bends right. IF the solid phase is less dense than the liquid phase. The line that separates solid and liquids bends left.
What is definition of phase?
(Entry 1 of 2) 1 :
a particular appearance or state in a regularly recurring cycle of changes phases of the moon
. 2a : a distinguishable part in a course, development, or cycle the early phases of her career. b : an aspect or part (as of a problem) under consideration.
What phase change involves a solid turning into a gas?
Sublimation
is the conversion of a substance from the solid to the gaseous state without its becoming liquid. It occurs more frequently among substances that are close to their freezing point. Sublimation, in physics, conversion of a substance from the solid to the gaseous state without its becoming liquid.
What is the transition from solid to liquid called?
The process of a solid becoming a liquid is called
melting
. (an older term that you may see sometimes is fusion). The opposite process, a liquid becoming a solid, is called solidification. For any pure substance, the temperature at which melting occurs—known as the melting point—is a characteristic of that substance.
What are the different processes in phase change?
There are six ways a substance can change between these three phases;
melting, freezing, evaporating, condensing, sublimination, and deposition
( 2 )
. These processes are reversible and each transfers between phases differently: Melting: The transition from the solid to the liquid phase.
