does a connection or a relationship exist between the reactivity of a metal and when was it discovered? By: Noor Al Thani 8B
Copper Symbol- Cu Atomic number- 29 Atomic mass-63.546 it is at least 10,000 years old. Copper does not often react with cold dilute acid and it reacts better with hot sulfuric acid and nitric acid because copper is strong and doesn't react with less stronger acids.
Iron Symbol- Fe Atomic number- 26 Atomic mass- 55.845 amu Iron was discovered 4000 years ago in south east Asia, iron can be really effective to some acids or liquids and it will possibly make a reaction because some kind of iron is hard to rust.
Magnesium Symbol- Mg Atomic number-12 Atomic mass-24.305 amu It was discovered in 1755 in England, magnesium is quiet active which means its strong and sometimes really reactive to some acidic substances,
Zinc Symbol-Zn Atomic number-30 Atomic mass- 65.39 amu It was discovered is approximately in 1746, zinc can blow a balloon when it is mixed with hydrochloric acid and it is very sometimes effective it depend on what you are testing it with.
Conclusion • I say that the earlier the metal was discovered the less reactive it is. That’s because older days they didn’t have everything we have know and there are other things discovered. Yes there is a connection. There were not many chemical scientists like now. More reactive metals are hard to discover.
Bibliography • http://education.jlab.org/itselemental/ele029.html • http://uk.ask.com/question/when-was-copper-discovered • http://www.chem.qmul.ac.uk/iupac/AtWt/ • http://questionswithanswer.blogspot.com/2008/03/when-was-iron-discovered.html • http://www.chemicalelements.com/elements/fe.html • http://www.facts-about.org.uk/science-element-magnesium.htm • http://www.chemicalelements.com/elements/mg.html
http://www.chemicalelements.com/elements/zn.html • http://sciencepark.etacude.com/lzone/reactivity/Cu.php • http://www.nlm.nih.gov/medlineplus/druginfo/natural/912.html • http://www.lenntech.com/periodic/elements/mg.htm • http://www.youtube.com/watch?v=oQz5YEsx7Fo