Chapter 4: Properties of Matter and the Analysis of Glass Jeopardy Forensic Science Chapter 4: Properties of Matter and the Analysis of Glass

Physical Properties Forensic Analysis Light Glass 100 100 100 100 200 200 200 200 300 300 300 300 400 400 400 400 500 500 500 500

Bending of light waves caused by a change in speed as it passes What is refraction? Bending of light waves caused by a change in speed as it passes between two mediums Row 1, Col 1

A property of matter describing The amount of matter in a given What is density? A property of matter describing The amount of matter in a given volume. 1,2

The major component of glass. What is sand (SiO2)? The major component of glass. 1,3

Types of glass can be identified by measuring these two physical What are density and refractive index? Types of glass can be identified by measuring these two physical properties. 1,4

the speed of light waves in a What is the speed of light? the speed of light waves in a vacuum 2,1

A property of matter represented By the ratio of the speed of light What is refractive index? A property of matter represented By the ratio of the speed of light In a vacuum to the speed of light In a given medium 2,2

Sodium carbonate and these substances are added to sand to What are metal oxides? Sodium carbonate and these substances are added to sand to make glass. 2,3

The 3R rule is used to determine What is the direction of impact on a glass surface? The 3R rule is used to determine this. 2,4

Types of electromagnetic radiation are distinguished by What are frequency and wavelength? Types of electromagnetic radiation are distinguished by these two characteristics 3,1

The volume of an irregularly shaped object can be measured What is water displacement? The volume of an irregularly shaped object can be measured by this method. 3,2

Type of glass used in automobile What is laminated glass? Type of glass used in automobile windshields. 3,3

Fractures on glass that extend outward from the point of What are radial fractures? Fractures on glass that extend outward from the point of impact like spokes on a wheel. 3,4

a halo of light on the outside or inside border of a glass What is the Becke Line? a halo of light on the outside or inside border of a glass sample immersed in a transparent liquid. 4,1

A property of a substance which can be observed without What is a physical property? A property of a substance which can be observed without changing the identity of the substance. 4,2

Type of glass with exceptional Heat resistance used for What are Borosilicates? Type of glass with exceptional Heat resistance used for Cookware and laboratory glassware. 4,3

The sequence of impact for Multiple impacts on a glass What is tempered glass? The sequence of impact for Multiple impacts on a glass Surface cannot be determined For this type of glass. 4,4

the refractive index of a substance depends upon its What is density? the refractive index of a substance depends upon its temperature and this phyical property 5,1

What are grams per mL? Units of density. 5,2

Float glass, used in windows, has a smooth surface formed as What is molten tin? Float glass, used in windows, has a smooth surface formed as the glass is cooled in this type of bath. 5,3

The fact that a glass fracture line always terminates at an existing What is the sequence of impact? The fact that a glass fracture line always terminates at an existing fracture line is useful for determining this. 5,4