The is the temperature at which a liquid turns to a solid.
a. freezing point
b. s-density point
c. vaporization point
d. plasmafaction point

An engineering team designs a new rocket that is faster and lighter than any other model being produced. however, the materials end up being so expensive that no company can afford to buy them. which step of the engineering process should have addressed this problem? a. know the background. b. evaluate the results. c. identify a need. d. do the work.

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

Can someone me with questions 12 and 13 plz.