The Atomic Mass - (minus) The Atomic Number tells you the number of protons in an element If an element is an ion, it has more or less neutrons than usual.

Elements in the same vertical column are called Periods.

The 3 groups of the periodic table are metals, non-metals, and gases.

TRUE OR FALSE plzz helppp!!

why is cellular respiration important for homeostasis?

it changes food into energy that the organism can use.

which of the following is most likely to happen if a cell is not able to divide?

the cell will not be replaced when it is damaged.

explanation:

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >