Answer:
1. Fireworks: chemical,
2. Hair: physical
3. glow sticks: chemical
4.Baseball: physical
5.Popcorn: chemical
Explanation:
1. bc there are chemicals/powders
2. the hair is still hair, even if it is cut
3. You are combining chemicals, this cannot be un-done
4. The shards are still glass, they do not turn into another substance other than glass
5. You heated the popcorn, it "exploded", this cannot be undone
