Atoms of the same chemical element, carbon for example, always ...

[Diane]

Atoms of the same chemical element, carbon for example, always have the same number of
  ___________________ _ in the nucleus. Fill in the blank(s) with the appropriate word(s).

Question 2

In the center of an atom is its ___________________ _, which is composed of positively-charged
  particles called ___________________ _ and neutrally-charged particles called
  ___________________ _. This central part is orbited by negatively-charged particles called
  ___________________ _. Fill in the blank(s) with the appropriate word(s).

[rachel]

Answer to Question 1

protons

Answer to Question 2

nucleus, protons, neutrons, electrons

[Diane]

TYSM

[kthug]

Gracias!