Displaces the oxygen.
Renders the fire’s fuel non-flammable.
Forms water vapor.
Blows the fire out with strong wind currents.
Obviously accepted by most people.
A fully functional experiment.
In alignment with past theories.
Repeatedly confirmed by experimentation.
The color spectra of stars indicate which elements are present.
A red shift in star color indicates stars are moving away.
Star color indicates absolute distance.
It allows the observer to determine the size of stars.
Ag to Pd
Co to Ni
Ge to Sn
Cr to Mo
The nucleus occupies most of the atom’s volume but contains little of its mass.
The nucleus occupies very little of the atom’s volume and contains little of its mass.
The nucleus occupies most of the atom’s volume and contains most of its mass.
The nucleus occupies very little of the atom’s volume but contains most of its mass.
The protons in the neighboring nucleus.
Free electrons in the crystals.
0 ºC and 1.0 atm pressure.
0 ºC and 273 mm Hg pressure.
0 K and 1.0 atm pressure.
0 K and 760 mm Hg pressure.
Probably form a new precipitate as its crystal lattice is broken and re-formed.
Be unaffected because attractive forces within the crystal lattice are too strong for the dissolution to occur.
Begin the process of melting to form a liquid.
Dissolve as particles are pulled away from the crystal lattice by the liquid molecules.
Water at zero degrees Celsius is colder than liquid nitrogen and freezes.
The nitrogen boils and then cools to form a solid at the opening of the container.
Water trapped in the liquid nitrogen escapes and freezes.
The water vapor in the air over the opening of the liquid nitrogen freezes out.
Increasing the equilibrium constant in favor of products.
Lowering the activation energy required for the reaction to occur.
Raising the temperature at which the reaction occurs.
Increasing the pressure of reactants, thus favoring products.
The reverse reaction rate remains the same.
The forward reaction rate increases.
The reverse reaction rate decreases.
The forward reaction rate remains the same.