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What occurs at the cathode of a galvanic cell?
An oxidation half-reaction
Difference between oxidation and fermentation?
Oxidization occurs when oxygen is present and two or more substances interact, and one losses an electron. In anaerobic situations (when oxygen is not present) fermentation occurs. Fermentation derives energy (ATP) from compounds that are being oxidized.
What is the meaning of the oxidation number of an element that forms an ionic bond?
The oxidation number of an element essentially tells you the charge that an element would like to achieve by bonding in order to either fill an octet of electrons or lose an outer layer of electrons exposing an octet. For example, a neutral oxygen atom will have 6 valence electrons so in order to have a full set of 8, it wants to gain 2 electrons, and since an electron has a negative charge, it has an oxidation number of -2. Sodium on the other hand has 1 valence electron, and its easier to lose this one then gain 7 more, so when it losses this electron, it will have more positive charges in the nucleus than negative charges, giving it an oxidation number of +1. Oxidation numbers are important in bonding because it determines the ratio of elements needed. In general, compounds need to be neutral, meaning the sum of the oxidation numbers of its elements must be 0. For example, Magnesium has an oxidation number of +2 and Chlorine of -1. To cancel out, you need to have 2 Chlorine per Magnesium, meaning the result will be MgCl2.
If atom that losses one or more electrons it will have a what charge?
Positive. Unless their are still more electrons then protons.
What is formed when an atom losses its electrons?
A positively charged cation
What do you call an atom When an atom losses or gains electrons its called an?
cell
what electrons do not losses or gains any ions?
hydrogen and nobol gasses
When a atom losses a electron it becomes a?
It depends on the amount of electrons. Zaragotha (Zara)
What happens when object losses electrons?
This element become a positive ion (cation).
Why is burning alcohol a chemical change?
Burning alcohol is a chemical change because it involves a chemical reaction where the alcohol molecule is broken down into different substances (such as carbon dioxide and water) with new properties. Energy is released during the reaction, and the composition of the alcohol is permanently altered.
Does beryllium's gains or losses ion?
Beryllium tends to lose two electrons to form a 2+ cation.
What atoms can form an ion?
an atom which readily losses or gains electrons to attain stability forms an ion.
