CHEM 101 Test 2 soil, metals and paints

Question 1

How can you perform elemental analysis of sample?

Accepted Answer

Atomic Absorption, Emission, Inductively Couple Plasma, X-ray Fluorescence

Question 2

Explain Emission...

Accepted Answer

You heat it, it gives off light, creates a color pattern.

Question 3

How do you test the size of minerals?

Accepted Answer

Seive set, Sink float method (Bromoform separates heavy from light minerals), Density column.

Question 4

How to identify minerals in soil?

Accepted Answer

Polarized light microscopy

Question 5

What elemental analysis can be done on soil?

Accepted Answer

Atomic absorption, Emission, Xray.

Question 6

How are metals tested?

Accepted Answer

Atomic absorption, Emission, X-ray

Question 7

What is paint tested for?

Accepted Answer

Color, texture, layer structure, pigments and binders.

Question 8

How can color be tested?

Accepted Answer

Spot test or visible spectroscopy

Question 9

How can texture be tested?

Accepted Answer

Microscopy

Question 10

What is the most common pigment?

Accepted Answer

White pigments

Question 11

What are color pigments composed of...

Accepted Answer

Transition metals

Question 12

What are extender or filler pigments composed of or do?

Accepted Answer

Composed of common minerals and give bulk

Question 13

What are specialty pigments used for...

Accepted Answer

Anti-fungal, Anti-corrosion, fire proof

Question 14

What is binder material made of usually...

Accepted Answer

Latex, enamel, epoxy

Question 15

How can you analyze binder...

Accepted Answer

Infrared tests or pyrolysis

Question 16

What is pyrolysis...

Accepted Answer

Breaking the paint up via heat to analyze it

Question 17

What are 2 ways to separate organic and inorganic material from each other?

Accepted Answer

HF dissolves inorganic material, H2O2 dissolves organic stuff.

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