Which of the following is NOT one of the information
chemicals stored in DNA?
a. adenino
b. guanine
c. cytosing
d. sulfide

Option B) sulfide

Explanation:

DNA is the main genetic material found in living organisms, and helps in the transmission of traits from parents to offspring through the genes.

It consists of several repeating units of polydeoxynucleotides composed of chemical like nitrogenous bases (such as thymine, cytosine, adenine and guanine), deoxyribose sugar and phosphate groups.

Thus, sulfide are not present in DNA

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.