How many total numbers of atom are there? Including that 24 created by scientist.

Scientist call each kind of atom an element and they put it all on the chart called?

Surprisingly,almost 99% of your body is made up of just, how many elements?

Which are the element of human body?

Which below make up the atoms?

Electron is ______.

Proton is _______.

Neutron is ______.

Electron move around protons at lightning speed and make up ________.

All element have the same number of protons and electrons. Why?

Without _____, the electric force will cause the proton to push other proton out of atom.

Neutron act like a _____ to hold the nucleus together.