A student made a model to show how particles of a substance X are arranged. His friends observed the model and concluded that Substance X is a solid. What supportstheir conclusion?
a. The particles are closely packed that allows Substance X to change its volume
b. The particles are fixed at their positions that allows Substance X to retain its shape
c. The particles are bonded to each other that allows Substance X to maintain a fixed mass.
d. The particles are identical to each other that allows Substance X to have a uniform composition.
