Changing the number of ___ gives an atom a neutral charge or causes it to take on a positive or negative charge. (pick on that best fits) a.) atomic mass
b.)atomic number
c.) protons
d.) ions
e.)neutrons
f.) neutral
g.) electrons

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.

0.09 moles of sodium sulfate in 12 ml of solution