Directions: For questions 29 and 30, complete all parts on your own paper and submit at the end
of the test.
29. Constructed Response: Answer Parts A and B.
Ions are atoms with positive and negative electrical charges. The charges of two
ions are shown in the table below.
Ion
Aluminum
Chloride
Charge
+3
- 1
Use the table to answer Part A and Part B.
Part A:
One aluminum ion and one chloride ion are combined. What is the total charge?
Part B:
Explain your answer to Part A using a number line or counters.