Try to answer all of the questions or just 1, 2, and 3 i'm stupid

Identify the electromagnets with poles that are reversed from the electromagnet shown above

Define the kinetic molecular theory

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6