states of matter Haleigh Miller Flashcards
Liquid
Closely packed but can slide past eachother.
Solid
Have a definite shape and volume , in fixed positions.
Gas
Are in a constant state of motion and rarely stick together.
Plasma
A state of matter that starts as a gas and then becomes ionized
Energy
The capacity to do work
Thermal energy
This kinetic energy of a substances atoms
Evaporation
The change of a substance from a liquid to a gas
Sublimation
The process in which a solid changes directly into a gas
Condensation
The change of a substance from a gas to a liquid
Crystalline solid
Have an orderly arrangement of atoms or molecules example iron, diamond, ice
Amorphous solid
Are composed of atoms or molecules that are in no particular order
Surface tension
The force acting on the particles at the surface of a liquid that cause a liquid to form spherical drops
Kinetic energy
Particles are in motion or energy of motion
Heat
A transfer of energy known as heat causes the temp of a substance to change which can lead to a change of state
Endothermic change
When melts it requires endothermic energy makes the molecule move faster to melt the solid
Exothermic change
Like condensation freezing is an exothermic change because energy is released from the substances as it changes state. Motion of the particles slow down
Fluid
A non solid state of matter in which the atoms or molecules are free to move past each other as in a gas or liquid.
Buoyant force
The upward force exerted on an object immersed in or floating on a fluid.
Pressure
The amount of force exerted per unit area of a surface
Archimedes Principle
The principle that states that the buoyant force on an object in a fluid is an upward force equal to the weight of the volume of fluid that the object displaces.
Pascal
The SI unit of pressure
Pascals Principle
The principle that states that a fluid in equilibrium contained in a vessel exerts a pressure of equal intensity in all directions
Viscosity
The resistance of a gas or liquid to flow
Bernoulli’s Principle
Fluid pressure decreases as the speed of moving fluid increases