Gases
What determines the chemical matter and other properties of that specific atom?
What are the types of arrangements of an atom?
______ is a liquid at room temperature while ammonia is a gas because the hydrogen bonds between _____ molecules are stronger than the O-H bonds between ammonia molecules?
What is water?
Liquids are fluids because they can?
What is flowing and diffusing?
According to the kinetic-molecular theory, why do solids have a definite shape and volume?
What are strong attractive forces between the particles?
What does a phase diagram show?
What are predictions of a substances' phase?
What else affects the density of an element other than mass in atoms/molecules?
What is air/gas?
Dispersion forces are sometimes referred to as what?
what are London forces?
________ is the energy required to increase the surface area of a liquid due to the inward pull of particles in the interior of the liquid?
What is surface area?
Why are solids denser than liquids in general?
what are particles being more closely packed?
What is the pressure exerted by a vapor over a liquid?
What century did scientists make the kinetic-molecular theory/model?
When is the 18th century?
_______ can approach each other by having a hydrogen atom on one molecule attracted to the lone pair of electrons on the oxygen atom of another water molecule?
What are water molecules?
Soaps and detergents contain surface-active
agents or?
What are surfactants?
Why does ice have a lower density as a solid compared to liquid water?
What are hydrogen bonds?
_________ of a crystalline solid is the temperature at which it transitions into a liquid.
What is melting?
As molar mass increases, what happens to the rate of effusion?
What is effusion decreasing?
The average ______________ of a particle is the sum of its individual kinetic energies.
What is kinetic energy?
_______is a fuel burned in gas furnaces, hot-water heaters, and stoves.
What are natural gases?
What are examples of amorphous solids?
What are glass, rubber, and many plastics?
What two variables control the phase of a substance?
What are temperature and pressure?
Diffusion refers to the movement of one substance through another. If this is the case, what is the meaning of “effusion”?
What is gas escaping through small openings?
_____________ typically dominate dispersion forces?
What are Hydrogen bonds?
When liquid helium was cooled below ~270.998C,
the intermolecular forces decreased, causing the _______ to decrease as well.
What is viscosity.
What are the five categories of crystalline solids.
What are atomic solids, molecular solids, covalent network solids, ionic solids, and metallic solids?
What is the opposite of sublimation?
What is deposition?