Is rubbing alcohol polar, non-polar, or ionic?

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

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

Name 3 types of energy you see being used as you look around a classroom