omg yessss that is so cute she will totally accept
in the experiment, a catalyst is added to concentrated hydrogen peroxide.
the hydrogen peroxide decomposes rapidly, according to the equation
2h₂o₂(ℓ) ⟶ 2h₂o(ℓ) + o₂(g)
new substances are formed, and old ones disappear, so this is a chemical reaction.
the reaction also releases a large amount of heat.
the rapidly-expanding oxygen gas caries with it droplets of water and hydrogen peroxide (and probably some steam, as well).
the visual effect is like a genie escaping from its bottle.
you have 0.500g of ether. every 0.736 grams of ether equals 1 ml. all you have to do is divide!
0.500 / 0.736 = ?