List each atom and how many are in the compound. Follow the example below.
Ca = 1 Cl = 2

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

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

Which substance can be broken down by chemical means