Which of the following will increase the rate of a chemical reaction? OA.
decreasing the experimental temperature
OB.
increasing the surface area of the reactants
OC.
decreasing the concentration of the reactants
D.
all of these

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

The biosphere of the earth is made up of what compound? organic or inorganic?

The bohr model of the atom explained why emission spectra are discrete. it could also be used to explain the photoelectric effect. which is a correct explanation of the photoelectric effect according to the model?