Please enable JavaScript.
Coggle requires JavaScript to display documents.
[Measuring Metal Reactivity Deconstruct] : - Coggle Diagram
[Measuring Metal Reactivity Deconstruct]
:
Using Electrochemistry - Galvanic Cells
Data
Qualitative
N/A
Quantitative
Measurment on Voltmeter
Problems: being able to decipher which metal has a higher reactivity from looking at the Voltmeter, if there are two metals with similar results
Variables
Procedure
Advantages
More accurate - given an exact volt
Disadvantages
A lot of trials to test
Using two metals against each other to measure when a chemical reaction occurs in such a way that it generates electrical energy via a spontaneous redox reaction. The more reactive metal will lose the electrons, which are gained in the less reactive metal to ensure a redox reaction
Metal Displacement
Advantages
Disadvantages
a metal from the electrochemical series is combined with the ions from a less reactive metal in the electrochemical series. The atoms from the more reactive metal push electrons onto the ions of the less reactive metal.
Procedure
By putting each metal on a spotting dish and using the salts of the other metals to observe any changes. A displacement reaction is where a more reactive element displaces a less reactive element.
[Variables
Data
Quantitative
reaction time
problem: inaccurate time
Qualitative
Any Chemical Changes (sound, gas, solid, colour change/form)
Reaction of metals with Hydrochloric acid
Procedure
In each test tube with each metal a small proportion of HCl will be added to each test tube. Anything that does not react is less reactive to others
Disadv.
Surroundings - reaction time errors
Depending on their atomic structure and how readily they give up electrons when exposed to hydrogen ions in an acidic solution, certain metals, including zinc and magnesium, corrode more easily than others
Data
Quantitative
reaction time
problem: inaccurate time
Qualitative
Any Chemical Changes (sound, gas, solid, colour change/form)
Adv.
Variables
Observation of metals with water
Observing the relative reactivity by observing how fast each metal appears to react with water once universal indicator is added
Procedure
In each test tube with each metal a small proportion of cold water will be added to each test tube and followed by a few drops of universal indicator to measure any changes to measure reactivity. Anything that does not react is less reactive to others
Data
Qualitative
colour change
Quantitative
reaction time
problem: inaccurate time
Variables
pH of water must remain at 7 as it will affect the result because the pH of the water will be included
Temperature
Surface area
Advantages
not as many tests
Disadvantages
errors present if pH of water is not controlled