Please help!! 1. Although atoms can be rearranged in physical or chemical changes they are never
or This is referred to as the law of conservation of mass.

2.CO2 likely has ( covalent / ionic ) bonds and KFl is likely to contain ( covalent / ionic ) bonds.

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.