1. What number indicates an electron?
2. What is the mass number of this element?
3. Which of these is the electron?
4. Mr Negative here is better known as? His charge is negative.
5. Mr Green here is neutral and is better known as a_________.
6. Which of these is the proton.
7. Which particle of an element is responsible for the name of the element?
8. All matter is made of...
9. Which particle is being represented in this picture
10. Which subatomic particle is being shown in the picture?