Paint, Soil & Glass Flashcards Preview

CHE103 > Paint, Soil & Glass > Flashcards

Flashcards in Paint, Soil & Glass Deck (14)
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1
Q

What is paint?

A

A suspension of pigments and additives intended to colour and protect a surface.

2
Q

What is pigment?

A

A fine powder that is insoluble in its parent medium.

3
Q

What is the binder/vehicle?

A

The portion that allows paint to disperse evenly.

4
Q

What are the 3 types of paint?

A

Architectural paints, product coatings and special-purpose coatings

5
Q

What are Th r 4 stages of automotive paint?

A

Pretreatment, primer, colour coat and clear coat

6
Q

Where should paint samples be taken form?

A

Close to but not from the damaged area

7
Q

What is the primary reason for paint analysis?

A

To determine its chemical composition.

8
Q

Where is paint typically seen?

A

I’m vehicle related crimes.

9
Q

How do we match paint? (3)

A

Physical match, colour and texture and chemical analysis.

10
Q

How is glass usually found?

A

In small fragments

11
Q

How is glass density measured?

A

The sink-float method

12
Q

What are soil and glass primarily made from?

A

Minerals

13
Q

When is soil most likely to be used as evidence?

A

When a footprint or tyre track is in it.

14
Q

What is the goal of forensic soil analysis?

A

To match the soil found at a crime scene to its source.