Astudent performs the follow experiment. step 1: she pours a colorless solution into a beaker that contains another colorless liquid. yellow particles appear in the liquid step 2: she lets the yellow particles settle in the beaker and then deprecated the colorless liquid by recantation. which has most likely occurred in the beaker?

A chemical change in 1 step and a physical change in 2 step.

Explanation:

In the first step, when the student poured colorless solution into the another liquid, yellow particles appeared which means that there is some chemical reaction which has taken place.

In the step 2,  when these yellow colored particles precipitate settled, a colorless liquid at top is left,  so, this is a physical change because no new substance was produced and through the recantation it was removed.

The answer is (A) peeps.

Explanation:

Got a 100% on the quiz

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.