By calculating it's number of GROUP........
Answer:
Activating a glow stick is the example of a chemical change, as snapping one will cause a chemical reaction, causing the glow. All of the other options are physical changes because nothing new is formed. Hope this helps!
Hello there.
<span>What is an acid according to Arrhenius?
</span><span>b. a substance that is a hydrogen ion donor
</span>
i just learnt this recently but i need to look through my notes again.
I think it's the last one
(and I'm so sorry if I'm wrong)
