The boiling point of a substance is affected by
a. the mass of the substance.
b. the substance’s volume.
c. the pressure of the air above the substance.
d. the weight of the substance.

Identify which properties could correspond to solids, plasmas, or both. maintain a unique shape. collide infrequently with other particles. have very high velocities. conduct electricity. protons. have a low temperature. has long-range order.

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles