Also, there's Alma 40. I'll quote a few verses:
11 Now, concerning the
state of the soul between
death and the resurrection—Behold, it has been made known unto me by an angel,
that the spirits of all men, as soon as they are departed from this mortal body, yea, the spirits of all men, whether they be good or evil, are
taken home to that God who gave them life.
12 And then shall it come
to pass,
that the spirits of those who are righteous are received into a state of
happiness, which is called
paradise, a state of rest, a state of
peace, where they shall rest from all their troubles and from all care, and sorrow.
13 And then shall it come
to pass,
that the
spirits of the wicked, yea, who are evil—for behold, they have no part nor portion of the Spirit of the Lord; for behold, they chose evil works rather than good; therefore the spirit of the
devil did enter into them, and take possession of their house—and these shall be cast out into outer
darkness; there shall be
weeping, and wailing, and gnashing of teeth, and this because of their own iniquity, being led captive by the will of the devil.
14 Now this is the state of the
souls of the
wicked, yea, in darkness, and a state of awful,
fearful looking for the fiery
indignation of the wrath of God upon them; thus they remain in this
state, as well as the righteous in paradise, until the time of their resurrection.
These verses clarify what happens after death when the spirit leaves the body. There is a division among the wicked and the righteous. The wicked remain in the state of "darkness, and a state of awful, fearful looking for the fiery indignation of the wrath of God upon them". This is Hell. But the wicked do not stay there forever for "thus they remain in this state, as well as the righteous in paradise, until the time of their resurrection". After the resurrection the wicked are redeemed from this hell. (This is further amplified in the Doctrine and Covenants, where it also speaks of the "sons of perdition" who will never be redeemed from hell. ) These verses teach that paradise is a place of peace and rest from sorrow and troubles. We could certainly call this heaven, but these verses teach that the spirits of the righteous remain in paradise only until the resurrection. After the resurrection, as is pointed out in other BofM and D&C verses, the resurrected beings are appointed a permanent home in a heaven of varying degress of glory.