1. atom atom atom atom atom 1.True or false? Protons are in the nucleus.

2. atom atom atom atom atom 2.True or false? Electrons are in the nucleus.

3. atom atom atom atom atom 3.True or false? The mass of an electron is negligible compared to the mass of protons and neutrons.

4. atom atom atom atom atom 4.True or false? Protons are about the same mass as hydrogen atoms.

5. atom atom atom atom atom atom Hatom atom atom atom atom atom atom atom atom 5.True or false? Hydrogen atoms are the only ones with no neutrons.

6. atom atom atom atom atom 6.True or false? Atomic number = number of protons.

7. atom atom atom atom atom 7.True or false? Atomic number = number of neutrons.

8. atom atom atom atom atom 8.True or false? Atomic number = number of electrons..

9. atom atom atom atom atom 9.True or false? Mass number = Protons + electrons

10. atom atom atom atom atom 10.True or false? The radius of the nucleus is half that of the atom.

11. atom atom atom atom atom 11.True or false? so: p= 12 e - = 12 n= 12

12. atom atom atom atom atom 12.True or false? So: 11p 11e - 11n

13. atom atom atom atom atom 13.True or false? The nucleus has no charge.

14. atom atom atom atom atom 14.True or false? So the Cl - ion has 17 electrons.

15. atom atom atom atom atom 15.True or false? All electron shells hold a maximum of 8 electrons.

16. atom atom atom atom atom 16.True or false? The atom with electron configuration 2,8,7 is in Group VII.

17. atom atom atom atom atom 17.True or false? The atom with electron configuration 2,8,2 is in Period 2.

18. atom atom atom atom atom 18.True or false? In chemical reactions, electrons are the only sub- atomic particles involved.

19. atom atom atom atom atom 19.True or false? A covalent bond is formed between a metal and a non- metal atom.

20. atom atom atom atom atom 20.True or false? Covalent bonding involves the sharing of a pair of electrons.