Which of the following statements correctly describes the substance with the formula ki?
a. the compound of potassium iodide contains one ion of potassium and one ion of iodine.
b. there is a one-to-two ratio of potassium ions to iodide ions.
c. potassium iodide is a molecular compound.
d. none of the above

A. the compound of potassium iodide contains one ion of potassium and one ion of iodine.

answer: h+ its less than oh

explanation:

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.