Properties of Matter. Background for Glass Analysis Quiz Monday 10/03. What is Matter?. Matter is anything that has mass and takes up space . Mass: the number of particles in something, how much there is of an object
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Background for Glass Analysis
Quiz Monday 10/03
We can measure mass using a triple beam balance or digital scale.
Mass is measured in grams (SI Unit)
Density is defined as mass per unit of volume
The formula for density is…
density = mass
If the density of the object is greater than that of the fluid, the object will sink.
If the density of the object is equal to that of the fluid, the object will neither sink or float (suspended)
If the density of the object is less than that of the fluid, the object will float.
EX: weight, volume, color, boiling or melting point, viscosity, brittleness, buoyancy, phase changes
For the forensic scientist, the need to find and measure those properties that will associate one glass fragment with another--also minimizing or eliminating other sources.
To compare glass fragments, a forensic scientist evaluates two important physical properties:densityandrefractive index.
Can test for ecstasy, meth, aspirin, codeine, LSD, morphine
Routine drug tests for cocaine or heroine- fast test before sending to lab for detailed analysis
Uses a chemical reagent called Marquis reagent.
Chemical reaction occurs turning the unknown sample various colors detecting the type of drug
Ancient Greek philosophers suggested that earth, air, water, and fire as matters fundamental building blocks
basic unit of matter
Hydrogen and Oxygen
Sodium and Chlorine
Transfer of a substance into glass
In nature, vitrification of quartz occurs when lightning strikes sand, forming hollow, branching root like structures called fulgurites.
Silica(SiO2) is a common fundamental constituent of glass.
Element or compound?