. The center of the atom is called the (10 Points)
O nucleus
O protons
O electrons
O
neutrons

Protons I think. I might be wrong but I think its Protons

the nucleus is the center of atoms and its made of of protons and neutrons

Explanation:

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

plasma - state of matter made up of electrically charged particles