Question | Answer |
A substance whose molecules are arranged in orderly, geometric repeating patterns called crystals | crystalline solids |
A solid whose particles are arranged in a random manner | Amorphous solids |
An element that can exhibit more than one structural form in the same state | Allotropic element (graphite, diamond, buckminster fulllerene) |
The ability of a substance to flow | fluidity |
the ability of a fluid to resist flowing | viscosity |
force of cohesion at the surface of a liquid | surface tension |
the intermolecular force of attraction between particles of the same substance. | cohesion |
the intermolecular force of attraction between particles of different substances | adhesion |
the distortion of the level of a liquid due to adhesion to the solid containing it. | capillarity |
concave or convex upper surface of a liquid in a container. | meniscus |
standard temperature and pressure | STP |
explains the physical states of matter based on the combined movements and interactions of the particles within a substance | kinetic molecular theory |
A collision in which no energy is lost | elastic collision |
The mixing of the particles of one substance with those of another when the two are brought into contact. | Diffusion |
The flow of a gas from a region of higher pressure to one of lower pressure | effusion |
A gas that behaves according to the postulates of the kinetic molecular theory | Ideal gas |
a gas that does not follow the tenants | real gas |
the equilibrium pressure of vapor above its liquid (or solid) | The vapor pressure |
Occurs when vapor pressure equals the ambient atmospheric pressure | the boiling point |
The heat required to raise the temperature of 1 gram of a substance by 1 kelvin | specific heat |
the heat required to change 1 mole of a solid at its melting point to a liquid | molar enthalpy of fusion |
the heat required to change 1 mole of a liquid at its boiling point (and constant pressure) into a gas | molar enthalpy of vaporization |