In the following unbalanced reaction, which atom is oxidized?
H2O + Cl2 + SO2 ---> HCl + H2SO4

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false