What are the three parts of sound? (Select all that apply.) the identification of pitch

the detection of sound

the transfer of energy through a medium

the energy source

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

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