PAY 2 - 5th Grade Science STAAR Review Matter and Energy Readiness TEKS 5.5A
4. Enrique mixes yellow pellets in water. After stirring the
yellow pellets around in the water, they begin to disappear
Later, Enrique heats the mixture until all the water is
evaporated, and a yellow powder is at the bottom of the
beaker. What physical property of the yellow substance ha
Enrique demonstrated?
F. Density
6. Magnetism
H. Solubility
J. Mass
5. What physical property of foam makes it a good
use in life vests?

Answerthe half-reaction having the greatest tendency to occur at the anode:     i₂(aq) + 2e⁻  ⇄ 2i⁻  ;   e = +0.53 v======oxidation occurs at the anode. we must therefore find the half-reaction with the greatest tendency to oxidize.the given values of e are reduction potentials (the form of the half-reactions are of reduction).the lower the reduction potential, the higher the potential to oxidize. the half-cell with the lowest reduction potential will have the greatest tendency to oxidize at the anode.the half-reaction having the greatest tendency must be    i₂(aq) + 2e⁻  ⇄ 2i⁻    e = +0.53 vbecause its reduction potential is the lowest out of the three.

Heating it up with cause a quicker reaction time