activity series wiki

Take a nichrome wire of about 50 cm length and apply a potential difference of 1.5 V from a battery. Measure the current flowing through the wire using an ammeter connected to it in series, and note the potential difference across the resistance using a voltmeter connected across it. Note..

In the electrochemical series the elements that are lower in the series get discharged (lose their charge to become neutral) more easily than the ones above them. Hydrogen is also included as a reference point in the series. The electropositive power and the re..

Extracting Metals towards the Top of the Activity Series - Metals such as sodium, magnesium, calcium, aluminium high up in the reactivity series are very reactive and cannot be obtained from their compounds by heating with carbon. This is because these metals have more..

Extracting Metals Low in the Activity Series - Metals that are low in the activity series are very un-reactive. The oxides of these metals can be reduced to metals by heating alone. For example, mercury is obtained from its ore, cinnabar (HgS), by the process..

Metals such as iron, zinc, lead, copper, etc., are in the middle of the reactivity series. These are moderately reactive metals and are usually present as sulphides or carbonates. A metal is obtained from its ore by the processes of reduction or by electrolysis. In the reduction process,..

The penetration of the sperm activates the egg and initiates a series of changes in the egg cortex and in the egg cytoplasm. Ovulation in the human female occurs at the secondary oocyte stage in which meiosis - I has been completed and the first polar body has been released but ..

Electrochemical Series - Different electrodes have different standard electrode potentials. The standard electrode potentials (E) for some electrodes are negative, while for some others E values are positive. The E values of many electrodes have been measured and their standard reduction ..

Different electrodes have different standard electrode potentials. The standard electrode potentials (E) for some electrodes are negative, while for some others E values are positive. The E values of many electrodes have been measured and their standard reduction potentials are arranged in a ..

Different metals get ionised at different rates. For e.g., metals like sodium when exposed to air combine almost instantly with the oxygen present therein (sodium atom gives up an electron almost as soon as it is in contact with oxygen). On the other hand, metals like gold if exposed to air even fo..

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