In a closed system, the total energy before an energy transformation is the total energy after it.

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.

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants

the objects have the same charge is correct.

nathan lee