Reactivity of Group II Metals
Introduction:
So far you have seen the reactivity trend in the Group 1 metals. These reactions
convinced us that reactivity increases as we move down Group 1. Today you
will be designing and conducting an experiment that will answer the following
questions.
Question 1: Do the Group 2 metals share the same reactivity trend as Group
1 metals?
Question 2: Do the Group 2 metals react in a similar or different manner
than the Group 1 metals?
Question 3: What is the trend in reactivity as you move from left to right
across the 3rd period?
Question 4: What is the trend in reactivity as you move left to right across
the 4th period?
Pre-Lab
Design an experiment that will answer these questions. I will provide you with
two Group 2 metals to test: calcium and magnesium.
You also have access to the following equipment and chemicals
 Test tubes
 Phenolphthalein
 Water
 Test tube rack
 Calcium
 Your brain
 Matches
 Magnesium
Procedure:
1. You are going to design a procedure for each question above.
a. Write the first question in your lab notebook
b. Below the question, record a hypothesis for that question. Remember
to explain your reasoning in each hypothesis.
c. Below the hypothesis describe the procedure you will use to answer the
question.
d. In your procedure describe what observations you will have to make to
answer the question.
2. Repeat step 1 above for each of the three remaining questions.
a. If the physical procedure is the same, you can just say to repeat the
procedure, but you will have to list out what new observations you will
looking for to answer each question.
b. The procedure may be the same, but the observations will not.
3. Make a data table.
4. Get your procedure approved and then start.
Reactivity of Group II Metals
Introduction:
So far you have seen the reactivity trend in the Group 1 metals. These reactions
convinced us that reactivity increases as we move down Group 1. Today you
will be designing and conducting an experiment that will answer the following
questions.
Question 1: Do the Group 2 metals share the same reactivity trend as Group
1 metals?
Question 2: Do the Group 2 metals react in a similar or different manner
than the Group 1 metals?
Question 3: What is the trend in reactivity as you move from left to right
across the 3rd period?
Question 4: What is the trend in reactivity as you move left to right across
the 4th period?
Pre-Lab
Design an experiment that will answer these questions. I will provide you with
two Group 2 metals to test: calcium and magnesium.
You also have access to the following equipment and chemicals
 Test tubes
 Phenolphthalein
 Water
 Test tube rack
 Calcium
 Your brain
 Matches
 Magnesium
Procedure:
1. You are going to design a procedure for each question above.
a. Write the first question in your lab notebook
b. Below the question, record a hypothesis for that question. Remember
to explain your reasoning in each hypothesis.
c. Below the hypothesis describe the procedure you will use to answer the
question.
d. In your procedure describe what observations you will have to make to
answer the question.
2. Repeat step 1 above for each of the three remaining questions.
a. If the physical procedure is the same, you can just say to repeat the
procedure, but you will have to list out what new observations you will
looking for to answer each question.
b. The procedure may be the same, but the observations will not.
3. Make a data table.
4. Get your procedure approved and then start.