Gino made a table to describe parts of the electromagnetic spectrum.

what mistake did gino make?

a. x-rays should have a low frequency and a long wavelength.
b. infrared light should have a high frequency, not a low frequency.
c. radio waves should have a very high frequency and a very short wavelength.
d. ultraviolet light should have a short wavelength, not a long wavelength.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.