Zoha Rashid
Natalie Boyle
9-10-14
Natalie Boyle
9-10-14
Purpose
To explore the reactivity trends of metals in groups and periods of the periodic table.
Pre Lab Questions
1. Groups are verticals columns of the periodic table. Periods are horizontal rows on the periodic table. Groups of the periodic table that share a lot of similarities with all the other elements in that group.
2. In general, metals are located on the left side of the metalloid boundary.
3. Alkali metals and Alkaline Earth metals are two groups on the periodic table.
4. Gallium is in the third group and third period.
Procedures
Part 1: trends in properties within a group
Step 1: acquire a test tube rack
Step 2: acquire two clean test tubes
Step 3: label your test tubes
Step 4: fill a beaker with tap water and grab a disposable pipette.
Step 5: bring your test tubes to Charlene to get a sample of Magnesium and Magnesium
Step 6: use pipette to cover the sample with water
Step 7: observe reaction carefully and record into data table
Step 8: dump sample into hand over sink, rinse sample, and place into corresponding beaker, then wash test tube
To explore the reactivity trends of metals in groups and periods of the periodic table.
Pre Lab Questions
1. Groups are verticals columns of the periodic table. Periods are horizontal rows on the periodic table. Groups of the periodic table that share a lot of similarities with all the other elements in that group.
2. In general, metals are located on the left side of the metalloid boundary.
3. Alkali metals and Alkaline Earth metals are two groups on the periodic table.
4. Gallium is in the third group and third period.
Procedures
Part 1: trends in properties within a group
Step 1: acquire a test tube rack
Step 2: acquire two clean test tubes
Step 3: label your test tubes
Step 4: fill a beaker with tap water and grab a disposable pipette.
Step 5: bring your test tubes to Charlene to get a sample of Magnesium and Magnesium
Step 6: use pipette to cover the sample with water
Step 7: observe reaction carefully and record into data table
Step 8: dump sample into hand over sink, rinse sample, and place into corresponding beaker, then wash test tube
Metals
Magnesium Calcium |
Observations: Reactivity in Water
Does not react with water at all Creates white milky substance, changes from powder to liquid |
Part 2: activity series in HCL
Step 1: acquire one more clean test tube
Step 2: label test tubes
Step 3: one person in group receive HydroChloric acid from Charlene
Step 4: reuse Magnesium sample and acquire sample of Zinc and Tin from Charlene
Step 5: cover sample with dilute HCL, be cautious and add drop by drop
Step 6: observe reaction and fill in data table
Step 7(clean-up): bring samples to fume hood, pour one by one into labeled waste bottle
Step 1: acquire one more clean test tube
Step 2: label test tubes
Step 3: one person in group receive HydroChloric acid from Charlene
Step 4: reuse Magnesium sample and acquire sample of Zinc and Tin from Charlene
Step 5: cover sample with dilute HCL, be cautious and add drop by drop
Step 6: observe reaction and fill in data table
Step 7(clean-up): bring samples to fume hood, pour one by one into labeled waste bottle
Metals
Magnesium Zinc Tin |
Observations: Reactivity in HCL
Bubbles, steam, dissolves into HCL Less fizz, more bubbles, a lot of smoke, small pieces break off No reaction |
Post Lab Questions
1. Because Magnesium is less reactive than calcium it makes sense that it had a milder reaction.
2. Calcium, Magnesium, Zinc, Tin.
3. Yes, if I look at my data and the periodic table, it seems that the reactivity increase as you go move towards the right side.
4. Estimate of the density of Silicon: 3.14
5. One trend that I learned about was reactivity. I learned that as you do to the right of the periodic table, the reactivity in elements is gradually increasing.
1. Because Magnesium is less reactive than calcium it makes sense that it had a milder reaction.
2. Calcium, Magnesium, Zinc, Tin.
3. Yes, if I look at my data and the periodic table, it seems that the reactivity increase as you go move towards the right side.
4. Estimate of the density of Silicon: 3.14
5. One trend that I learned about was reactivity. I learned that as you do to the right of the periodic table, the reactivity in elements is gradually increasing.
Conclusion:
This activity taught us about reactivity and trends in the periodic table.
Analysis Questions
1. As you move down the periodic table, the reactivity of elements stays the same.
2. Reactivity increases going right across the periodic table, and decreases towards the left.
3. Most to least reactive: Na, Cs, Fr Ga, Fr, Rb
4. I think Helium because it has the highest electronegativity. You probably wouldn't find it in it's unreacted form because we most commonly find helium in balloons!
5. Yes, in my results, Magnesium was the most reactive then after that came Calcium, Zinc, and Tin. This matches what the table says.
This activity taught us about reactivity and trends in the periodic table.
Analysis Questions
1. As you move down the periodic table, the reactivity of elements stays the same.
2. Reactivity increases going right across the periodic table, and decreases towards the left.
3. Most to least reactive: Na, Cs, Fr Ga, Fr, Rb
4. I think Helium because it has the highest electronegativity. You probably wouldn't find it in it's unreacted form because we most commonly find helium in balloons!
5. Yes, in my results, Magnesium was the most reactive then after that came Calcium, Zinc, and Tin. This matches what the table says.