Complete the passage to distinguish between mechanical and electromagnetic waves.

Waves that move through matter only are called
waves. Waves that move through space are called
waves.

18. use the activity series to predict whether the following synthesis reaction will occur. write the chemical equations for the reaction if it's predicted to occur. (s) + o2(g) -> *note: it is possible.*

1) this is the structure in the cell nucleus that houses a cell's genetic information

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.