How many significant figures are in the following measurements ?
a. 3m/s
b. 3.00x10(8th power)
c.25.030*c
d. 0.006070 *c
e. 1.004 j
f. 1.30520 mhz

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

chemical properties of thing