Lizzy Young
Brad Adams
Purpose:
To explore the reactivity trends of metals in groups and periods of the periodic table.
Pre-lab Questions:
1.What are groups? What are periods? What are families?
The vertical columns on the periodic table are groups. The horizontal rows on the periodic table are periods. Families are specific groups in the periodic table.
2.In general. where are metals located on the periodic table?
The metals are located to the left of the metalloid boundary on the periodic table.
3.What are the names of two metal families?
Group one are the alkali metals, and group two are the alkaline earth metals.
4.What element is in group three and in the third period?
Aluminum is in the third group and period on the periodic table.
Procedures:
Part one, step one: Gather your supplies and label your test tubes. Step two: get your samples from Charlene and put them in your labeled test tubes. Step three: add enough water to cover the sample (use a disposable pipette.) Step Four: record your data and observations in the table below.
Part one: Trends in properties within groups.
|
Metal | Observations: reactivity in water.
Brad Adams
Purpose:
To explore the reactivity trends of metals in groups and periods of the periodic table.
Pre-lab Questions:
1.What are groups? What are periods? What are families?
The vertical columns on the periodic table are groups. The horizontal rows on the periodic table are periods. Families are specific groups in the periodic table.
2.In general. where are metals located on the periodic table?
The metals are located to the left of the metalloid boundary on the periodic table.
3.What are the names of two metal families?
Group one are the alkali metals, and group two are the alkaline earth metals.
4.What element is in group three and in the third period?
Aluminum is in the third group and period on the periodic table.
Procedures:
Part one, step one: Gather your supplies and label your test tubes. Step two: get your samples from Charlene and put them in your labeled test tubes. Step three: add enough water to cover the sample (use a disposable pipette.) Step Four: record your data and observations in the table below.
Part one: Trends in properties within groups.
|
Metal | Observations: reactivity in water.
Magnesium | No reaction
|
Calcium | The calcium separated from the water leaving .|a cloudy layer of water on top of the calcium.
Part two - Activity series of some metals in HCL.
1.Obtain your samples from Charlene and place them in labeled test tubes
2.Obtain a dropper bottle of HCL from Charlene.
3.Add enough HCL to completely cover each sample.
4. Record data and observations in the table below.
Part two - Activity series of some metals in HCL
Metal | Observations
|
Calcium | The calcium separated from the water leaving .|a cloudy layer of water on top of the calcium.
Part two - Activity series of some metals in HCL.
1.Obtain your samples from Charlene and place them in labeled test tubes
2.Obtain a dropper bottle of HCL from Charlene.
3.Add enough HCL to completely cover each sample.
4. Record data and observations in the table below.
Part two - Activity series of some metals in HCL
Metal | Observations
Magnesium | Rapidly fizzled, bubbled and dissolved
.. |
Zinc | Rapidly fizzled smoked, and turned black
. |
Tin | Slowly dissolved by acid
Post-lab Questions:
1.What might be a reason for the difference in behavior between magnesium and calcium when placed in water?
Magnesium did not react with the water because it is solid metal, but the calcium separated from and dissolved in the water because it is a powder.
2.List the four metals from most reactive to least reactive. Use data from your lab to support your answer.
Magnesium, Zinc, Tin, and Calcium. The magnesium was the most reactive because it completely dissolved whereas the zinc just fizzled and turned black. Te tin slowly bubbled and began to dissolve and the calcium was dissolved.
3.In general, is there a relationship between the locations of metals on the periodic tabla and their relative activity? Explain why.
It seems that the more reactive metals are further to the left and towards the top because magnesium is located in the upper left hand corner whereas tin is more towards the lower right hand corner of the periodic table.
4.Silicon, tin and lead are all in the same group. The density of tin is about 7.28 g/cm^3 and the density of Pb(lead) is 11.34 g/cm^3. Based on this trend, what do you estimate the density of silicon to be?
Around 3 g/cm^3.
5.What can you conclude about the reactivity of metals as you move down a column or group in the periodic table?
You can conclude that as you move down a group in the periodic table, the metals will gradually be less reactive.
6.What can you conclude about the reactivity of metals as you move across a period?
You can conclude that as you move across a period to the right on the periodic table that the metals will gradually be less reactive.
.. |
Zinc | Rapidly fizzled smoked, and turned black
. |
Tin | Slowly dissolved by acid
Post-lab Questions:
1.What might be a reason for the difference in behavior between magnesium and calcium when placed in water?
Magnesium did not react with the water because it is solid metal, but the calcium separated from and dissolved in the water because it is a powder.
2.List the four metals from most reactive to least reactive. Use data from your lab to support your answer.
Magnesium, Zinc, Tin, and Calcium. The magnesium was the most reactive because it completely dissolved whereas the zinc just fizzled and turned black. Te tin slowly bubbled and began to dissolve and the calcium was dissolved.
3.In general, is there a relationship between the locations of metals on the periodic tabla and their relative activity? Explain why.
It seems that the more reactive metals are further to the left and towards the top because magnesium is located in the upper left hand corner whereas tin is more towards the lower right hand corner of the periodic table.
4.Silicon, tin and lead are all in the same group. The density of tin is about 7.28 g/cm^3 and the density of Pb(lead) is 11.34 g/cm^3. Based on this trend, what do you estimate the density of silicon to be?
Around 3 g/cm^3.
5.What can you conclude about the reactivity of metals as you move down a column or group in the periodic table?
You can conclude that as you move down a group in the periodic table, the metals will gradually be less reactive.
6.What can you conclude about the reactivity of metals as you move across a period?
You can conclude that as you move across a period to the right on the periodic table that the metals will gradually be less reactive.