Ionic Compounds
Read page 260 – 261 and answer the following questions.
1. What is an ion?
______________________________________________________________________
______________________________________________________________________
2. When an atom loses one or more electrons, it becomes a positively charged ion
called a ________________.
3. When an atom gains one or more electrons, it becomes a negatively charged ion
called an _________________.
4. Sodium atoms usually lose one electron when they react with other atoms. The
resulting sodium ion now has;
a) how many protons? ___
b) how many electrons? ___
c) what overall ionic charge? ____
5. Chlorine atoms usually gain one electron when they react with other atoms. The
resulting chloride ion now has;
a) how many protons? ____
b) how many electrons? ____
c) what overall ionic charge? ____
6. A sodium ion and a chloride ion attract each other. Why? ____________________
_____________________________________________________________________
7. What is the name of the compound formed when a sodium ion and a chloride ion
combine? __________________________ (a.k.a. table salt)
8. What is an ionic compound? __________________________________________
______________________________________________________________________
How Atoms Combine
Read pages 263 – 265 and answer the following questions.
9. Metals do not form compounds with other metals, instead they form mixtures called
________________________.
10. a) In ionic compounds, ______________ atoms such as sodium combine with
___________________ atoms such as chlorine. The metals lose electrons to become
positively charged ions (cations) and the non-metals gain electrons to become
negatively charged ions (anions). These oppositely charged ions attract each other.
b) Look in Table 1 on page 264. Complete the following table:
Common name
Table salt/road salt
Chemical formula
Common use
Potash
11. a) When non-metallic elements combine with other non-metallic elements, the
atoms share each other’s electrons and form a chemical bond called a
________________bond.
b) Look in Table 2 on page 265. Complete the following table:
Common name
Ozone
Natural gas
Ammonia
Chemical formula
Common use