Which of the following possible outcomes regarding the universe do scientists think is most likey?
a) the universe will continue to expand
b) the universe has completed its expansion
c) the universe will start shrinking soon
d) the universe is already shrinking

Compare and contrast physical changes with chemical changes.

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

If two atoms are bonded to a central atom with no lone pairs, how will they be arranged