Which of the following statements is true? physical properties cannot be tested without changing the chemical structure of the substance. under normal conditions, atoms have a positive charge. the compound potassium chloride (kcl) has different properties than potassium (k) and chlorine (cl). increasing temperature will decrease the rate of a chemical reaction.

The compound

Everything else is wrong.

Physical properties: color smell taste etc,
No need for structure to change chemically.

Atoms are always neutral, unless they’re ionic and other factors play in such as δ-/+

Increase in temp. Leads to increase in energy hence increasing chemical reaction rate

Isec i will do it and them i will let you know

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.