Chemistry 2.0 / 5 based on 1 rating ? ChemistryAtomsThe Periodic TableGCSEAQA Created by: Olivia.MackieCreated on: 19-10-14 18:55 1089736214 Across 1. Elements in the group 0 are also known as _____ gases (5) 3. The centre of an atom is called a _______ (7) 4. The number of electrons is equal to the number of _______ (7) 10. An electron in the outer shell has a _______ energy level than one in the inner shell (6) Down 2. All substances are made up off _____ (5) 3. Elements in the group 0 are also known as _____ gases (5) 6. Protons have a ________ charge (8) 7. In the periodic table different groups represent different ________ (10) 8. An electron in the outer shell has a _______ energy level than one in the inner shell (6) 9. The sum of the nuetrons and protons is the _____ number (4)
Comments
No comments have yet been made