crime scene (about 1 square inch of sample is usually adequate for this purpose) The glass fragments should be packaged in solid containers to avoid further breakage
Subscribe to view the full document.
The standard/reference glass should always be taken from any remaining glass in a sample of broken glass remaining glass in the window or door frames, as close as possible to the point of breakageGlass fragments should be package in solid containers to avoid further breakage-If the suspect’s shoes/ and or clothing are to be examined for the presence of glass fragments, they should be individually wrapped in paper and transmitted to the laboratory -Field investigator should avoid removing such evidence from garments unless absolutely necessary for its preservation When a determination of the direction of impact is desired, all broken glass must be recovered and submitted for analysis -When this is not immediately apart, the presence of dirt, paint, grease, or putty may indicate the exterior surface of the glassReview Questions and Answers1.Anything that has mass and occupies space is defined as _MATTER______.2. The basic building blocks of all substances are the ___ELEMENTS________.3.The number of elements known today is ____118_______.4.An arrangement of elements by similar chemical proper- ties is accomplished in the ___PERIODIC________ table.5.A(n) _____ATOM______ is the smallest particle of an element that can exist.6.Substances composed of two or more elements are called __COMPOUNDS__.7. A(n) __MOLECULE___ is the smallest unit of a compound formed by the union of two or more atoms.8. The physical state that retains a definite shape and volume is a(n) ___SOLID________.9.A gas (has, has no) definite shape or volume. __ HAS NO___10. During the process of ____SUBLIMATION__, solids go directly to the gaseous state, bypassing the liquid state.11. The attraction forces between the molecules of a liquid are (greater, less)than those in a solid. ___LESS___12.Different __PHASES_________ are separated by definite visible boundaries.13.Mass per unit volume defines the property of _______DENSITY____.14.If an object is immersed in a liquid of greater density, it will (sink, float). _-FLOAT___15. The bending of a light wave because of a change in velocity is called ___REFRACTION________.16.The physical property of ___REFRACTIVE INDEX________ is determined by the ratio of the velocity of light in a vacuum to light’s velocity in a substance
17. True or False: Solids having an orderly arrangement of their constituent atoms are crystalline. __TRUE_________18.Solids that have their atoms randomly arranged are said to be _AMORPHOUS__________.19. The crystal calcite has two indices of refraction. The difference between these two values is known as ____BIREFRINGENCE _______.20.The process of separating light into its component colors or frequencies is known as ___DISPERSION________.21.True or False: Color is a usual indication that substances selectively absorb light. ___TRUE________22. The distance between two successive identical points on a wave is knownas _______WAVELENGTH____.
As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.
Temple University Fox School of Business ‘17, Course Hero Intern
I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.
University of Pennsylvania ‘17, Course Hero Intern
The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.
Tulane University ‘16, Course Hero Intern
Ask Expert Tutors
You can ask 0 bonus questions
You can ask 0 questions (0 expire soon)
You can ask 0 questions
(will expire )