Chemical Bonds, Ions & Organic Elements



1. The pictorial model of how an atom might look is called the ________ model.

2. In the center of an atom is the _______.

3. The nucleus of an atom is composed of equal numbers of ________ and ________.

4. Protons have a ________ electrical charge.

5. Neutrons are electrically _______.

6. Circling the nucleus are the _________.

7. Electrons orbit the nucleus in a three dimensional orbit called an electron _____.

8. Electrons have a ________ electrical charge.

9. The first energy level of an atom is called the ______ state.

10. The ground state is the ______ energy level.

11. The _______ energy level is the last electron shell of an atom.

12. Electrons which belong to the highest energy level are called _______ electrons.

13. Atoms want to have their _______ energy level full of electrons.

14. If the outer shell of an atom is full, the atom is ______ and will not participate in a chemical reaction.

15. The atomic number is equal to the number of _______.

16. In an atom, the number of protons is equal to the number of _________.

17. When two or more atoms bond chemically by sharing electrons it is called a _______ chemical bond.

18. _____ is the name of the molecule composed of two hydrogens and one oxygen which is bonded covalently.

19. Positives and negatives attract each other and form a _____ chemical bond.

20. When atoms gain an electrical charge, they are no longer called atoms. Instead, they are called ____.

21. ____ have a number of electrons which is not equal to the number of protons.

22. Oppositely charged ions attract each other to form an _____ bond.

23. The _____ _____ have full outer shells and do not form compounds with any other elements.

24. On the back of this paper, write both the symbols and the names of the nobel gases.

25. Halite is the name for ____.

26. The _________ are the salt forming elements.

27. Halogens have outer shells that are ___ short of being full.

28. When halogens steal electrons, they become __________ charged ions.

29. Name these elements and ions: Cl, Cl-, F, F-, Br, Br-, I, I-

Chemical Bonds, Ions, Organic Elements Notes