Name _____________________________________________
Date ____________________
Class ____________________
TEACHING TRANSPARENCY 22
Use with Chapter 7,
Section 7.1
Formation of Ions
Chemistry: Matter and Change
1
Teaching Transparency
Name _____________________________________________
Date ____________________
Class ____________________
TEACHING TRANSPARENCY 22
Use with Chapter 7,
Section 7.1
Formation of Ions
1. What are the names of the two elements shown?
______________________________________________________________________________________________
2. Are the elements shown on the left sides of the two equations neutral? How can you tell?
______________________________________________________________________________________________
3. What is the name for the energy needed to remove electrons from an atom, such as the Ca atom
shown?
______________________________________________________________________________________________
4. What kind of charge does the Ca atom take on as a result of the reaction? What is the name for an
ion with that kind of charge?
______________________________________________________________________________________________
5. What kind of charge does the O atom take on as a result of the reaction? What is the name for an
ion with that kind of charge?
______________________________________________________________________________________________
6. Is the outer electron configuration of the Ca atom before the reaction a very stable one? How can
you tell?
______________________________________________________________________________________________
7. Is the outer electron configuration of the O atom before the reaction a very stable one? How can you
tell?
______________________________________________________________________________________________
8. Is the outer electron configuration of the Ca ion after the reaction a very stable one? How can you
tell?
______________________________________________________________________________________________
9. Is the outer electron configuration of the O ion after the reaction a very stable one? How can you
tell?
______________________________________________________________________________________________
10. What is the electron configuration of the Ca ion? What neutral atom has the same configuration, and
in what chemical family is it located in the periodic table?
______________________________________________________________________________________________
11. What is the electron configuration of the O ion? What neutral atom has the same configuration, and in what chemical
family is it located in the periodic table?
______________________________________________________________________________________________
Chemistry: Matter and Change
2
Teaching Transparency Worksheet
TEACHER GUIDE AND ANSWERS
Teaching Transparency 22 –
Formation of Ions
1. calcium and oxygen
2. Yes; each contains equal numbers of protons and
3.
4.
5.
6.
7.
8.
9.
10.
11.
electrons.
ionization energy
positive; cation
negative; anion
No; it is not a stable octet of electrons.
No; it is not a stable octet of electrons.
Yes; it is a stable octet of electrons.
Yes; it is a stable octet of electrons.
1s2 2s2 2p6 3s2 3p6; argon, a noble gas, has the same
configuration.
1s2 2s2 2p6; neon, a noble gas, has the same
configuration.
Chemistry: Matter and Change
3
Teacher Guide and Answers