Brass is an alloy of copper and zinc. the two metals are melted, mixed, and then solidified. how would you best classify brass? a) homogeneous mixture b) heterogeneous mixture c) pure substance: mixture d) pure substance: compound

the answer is A homogeneous mixture. I just had this question on usatestprep

Explanation:

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but