Which equation correctly shows how you could calculate [OH–] from [H+]? StartBracket upper O upper H superscript minus EndBracket equals StartFraction 1.0 times 10 to the negative 14 power over StartBracket upper H superscript plus EndBracket EndFraction. StartBracket upper H superscript plus EndBracket equals StartFraction 1.0 x 10 to the negative 14 power over StartBracket upper O upper H superscript negative EndBracket EndFraction.

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.

no but i do not usually comment or use my voice that much when it comes to social media