Unit 6 Test Review - Trace Evidence

Malleable metals are metals that are brittle and can be broken.

• True

• False

Chromatography can be used to determine environmental contamination.

• True

• False

The study of lip prints is called dactyloscopy.

• True

• False

Lip prints are considered to have individual characteristics.

• True

• False

The presence of artifacts in the soil prohibits the forensic examination of soil for evidence.

• True

• False

Soil would usually be considered class evidence.

• True

• False

Refractive index is a physical property of all materials that transmit light.

• True

• False

Common metals that are magnetic are

• Iron, nickel ,and copper

• nickel, copper, and chromium

• chromium, zinc, and iron

• iron and nickel

Determining the density of a metal by observing weather it sinks or floats in bromoform is a

• a chemical test

• a physical test

• both a physical and chemical test

• neither a physical or chemical test

A confirmatory test is one that:

• is quick and easy way to determine whether or not a particular substance is present

• Is a quick and easy way to test substances in the field

• requires further testing to verify that a substance is present

• will positively identify a substance