At a town meeting, your government officials announce that the local landfill is running out of room and that it will be some time before they can build a new one. They ask for suggestions to help reduce the waste that goes into the landfill. Write down three suggestions that will help the town address this problem.

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.

the objects have the same charge.