Answer:
A mixture is a combination of two or more substances in which the identities of substances are retained.
Explanation:
sorry if i'm wrong
Answer: Chemical equation
Explanation: In writing a chemical equation, the correct formula and symbols of the reactants are written on the left hand side of the equation while those of the products are written on the right hand side. A horizontal arrow is drawn between the two sides to indicate the direction of the reaction.
Example: Na + Cl -> NaCl
<em>Diamond and graphite are allotropes of carbon and have various differences in their physical properties.</em>
Explanation:
<u>Diamond:</u>
- It is crystalline in nature
- Each Each C is
hybridized and forms 4 covalent binds with neighboring C atoms - The geometry is tetrahedral
- C-C bond length is 154 pm
- It has rigid covalent boning which is difficult to break.
- It acts as an electric insulator
<u>Graphite:</u>
-
It has layered structure
- Each C atom is sp2 hybridized and forms 3 sigma bonds with 3 other C atoms. Fourth electron forms pi bond.
-
The geometry is planar
- C-C bond length is 141.5 pm
- It is soft. Its layers can be separated easily
- It is good conductor of electricity.
This is the comparison of the physical properties of two forms of carbon: diamond and graphite