Torn paper vs burned paper? Coloring leaves in a coloring book vs leaves turning colors during fall and winter?
Describe the physical and chemical changes of each

physical- torn paper, coloring leaves in a coloring book

chemical- burned paper, leaves turning colors during fall and winter

Explanation:

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.