Which of the following descriptions
best describes a solid substance?
a. the volume of the substance depends on the
container it is in.
b. volume of the substance changes depending on its
location.
c. the shape of the substance changes often.
d. the shape of the substance is fixed and volume is
constant.

D

Explanation:

depending on the solid the shape will not change.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.