Mr block student are studying chemical

Which substance can be broken down by chemical means

How long could you survive without electricity? what parts of your life would be affected by loss of electricity? should you prepare for an electricity outage, and if so, how would you prepare? what backup system could your family or community install to generate limited amounts of electricity during an outage? how does this system create an electric force field and generate electric current?

Which of the following subject areas contains questions that can be answered by science? alchemy ethics forensics politics