Criminalistics Chapter 9
Flashcard maker : Elizabeth Mcdonald
Anything that has mass and occupies space is defined as [blank].
The basic building blocks of all substances are the [blank].
The number of elements know today is [blank].
An arrangement of elements by similar chemical properties is accomplished in the [blank] table.
An [blank] is the smallest particle of an element that can exist.
Substances composed of two or more elements are called [blank].
A [blank] is the smallest unit of a compound formed by the union of two or more atoms.
The physical state that retains a definite shape and volume is a [blank].
A gas (has, has no) definite shape or volume.
During the process of [blank], solids go directly to the gaseous state, by passing the liquid state.
The attraction forces between the molecules of a liquid are (greater, less) than those in a solid.
Different [blank] are separated by definite visible boundaries.
Mass per unit volume defines the property of [blank].
If an object is immersed in a liquid of greater density, it will (sink, float).
The bending of a light wave because of a change in velocity is called [blank].
The physical property of [blank] is determined by the ratio of the velocity of light in a vacuum to light’s velocity in a substance.
T/F : Solids having an orderly arrangement of their constituent are crystalline.
Solids that have their atoms randomly arranged are said to be [blank].
The crystal calcite has two indices of refraction. The difference between these two values is known as [blank].
The process of separating light into its component colors or frequencies is know as [blank].
T/F : Color is usually an indication that substances selectively absorb light.
The distance between two successive identical points on a wave is known as a [blank].
T/F : Frequency and wavelength are directly proportional to one another.
Light, x-ray, and radio waves are all members of the [blank] spectrum.
Red light is (high, lower) in frequency than violet light.
A beam of light that has all of its waves pulsating in unison is called a [blank].
One model of light depicts it as consisting of energy particles known as [blank].
T/F : The energy of a light particle (photon) is directly proportional to its frequency.
Red light is (more, less) energetic than violet light.
A hard, brittle, amorphous substance composed mainly of silicon oxide is [blank].
The two most useful physical properties of glass for forensic comparison are [blank] and [blank].
T/F : Automobile headlights and heat-resistant glass, such as Pyrex, are manufactured with lime oxide added to the oxide mix.
[Blank] glass fragments into small squares, or ‘dices’ with little splintering when broken.
[Blank] glass gains added strength from a layer of plastic inserted between two pieces of ordinary window glass; it is used in automobile windshields.
Comparing the relative densities of glass fragments is readily accomplished by a method known as [blank].
When glass is immersed in a liquid of similar refractive index, its [blank] disappears and minimum contrast between the glass and liquid is observed.
The fracture lines radiating outward from a crack in glass are known as [blank] fractures.
A crater-shaped hole in glass is (narrower, wider) on the side where the projective entered the glass.
T/F : It is easy to determine from the size and shape of a hole in glass whether it was made by a bullet or some other projectile.
A fracture line (will, will not) terminate at an existing line fracture.
Glass fracture lines that encircle that hole in the glass are known as [blank] fractures.
Collected glass fragment evidence should be packaged in [blank] containers to avoid further breakage.
Glass-containing shoes and/or clothing should be individually wrapped in [blank] and transmitted to the laboratory.