Impossible means it will not happen.
Unlikely means there is a small chance it will happen.
Equal chance means even chances.
Likely means that it is a good chance it will happen.
Certain means it will happen.
Let me try:
It is impossible that Andrea can fly.
It is unlikely that Andrea will lie to mommy.
It is likely that we may have chicken for dinner tonight.
I'm certain that Andrea will behave in class.
I like sports and eating.