Scientific vocabulary

2. Use of the light emitted by excited particles of certain atoms
5. A mineral composed of carbon element. It is an allotrope of carbon element and a particulate matter composed of elemental elements in nature.
6. Matter formed by regular and periodic repetition of the particles of matter in a three-dimensional space
8. It is a substance with electrical conductivity between insulator and conductor. Its electrical conductivity is easily controlled and can be used as a component material for information processing.
11. The ability of the material to resist damage under external force
12. The lightest element
13. Refers to the process in which materials and components under the action of cyclic stress or cyclic strain gradually produce local permanent cumulative damage at one or several places, and cracks or sudden complete fracture after a certain number of cycles
14. When an object is deformed due to the outside, an interactive internal force is generated between the various parts of the object to resist the action of this external cause and try to restore the object from the deformed position to the position before the deformation

1. It is an allotrope of carbon. Its molecule consists of carbon atoms connected by single and double bonds to form a closed or partially closed network structure with five to seven-membered condensed rings.
3. The ability of an object to conduct electricity
4. The ability of a material to locally resist hard objects pressed into its surface
5. It refers to the physical phenomenon in which waves propagate away from the original straight line when encountering obstacles.
7. It refers to a solid in which the molecules of a substance are not arranged regularly and periodically in space.
9. conductivity. Heat transfer when there is no macroscopic movement in the medium
10. The general term for pottery and porcelain