Answer:
Redox reactions
Explanation:
Redox reactions consists of both oxidation and reduction
one species gets oxidised and other species become reduced, both oxidation and reduction happen simultaneously
reduction is either gain of electrons or gain of hydrogen. in reduction the oxidation number of species reduces
in this reaction the reduction half equation is
O₂ + 4e --> 2O²⁻
oxidation is either loss of electrons or gain of oxygen. in oxidation the oxidation number of species increases.
Fe --> Fe²⁺ + 2e
since both these half reactions happen overall its a redox reaction
Covalent compounds have bonds where electrons are shared between atoms. Due to the sharing of electrons, they exhibit characteristic physical properties that include lower melting points and electrical conductivity compared to ionic compounds.
Answer: Usually, the rock pieces, called sediments, drop from the wind or water to make a layer. The layer can be buried under other layers of sediments. After a long time the sediments can be cemented together to make sedimentary rock. In this way, igneous rock can become sedimentary rock.
Explanation:
The answers include the following:
- Graphite conducts electricity because it has delocalised electrons which makes it possible for the electrons to move freely.
- Graphite is slippery because it has layers which makes it possible for the atoms to slide over each other.
<h3>What is Graphite?</h3>
This is referred to as an allotrope of carbon and it is the most stable form. it is used in the production of substances such as pencil, electrode etc.
Graphite is able to conduct electricity because of the presence of delocalized electrons and is slippery due to its atoms being able to slide over one another.
Read more about Graphite here brainly.com/question/27860158
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