Questions
**Which of the following physical properties of a mineral depends on the strength of the bonds...

**Which of the following physical properties of a mineral depends on the strength of the bonds that hold its atoms and ions together?

a. color

b. luster

c. specific gravity

d. cleavage

**When the chemical bonds in a mineral are equal in all directions, what will the result be?

a. a nonmetallic luster

b. cleavage

c. conchoidal fracture

d. a low density

**What must be true in order for an ore mineral occurrence to be economically valuable?

a. Natural processes must have concentrated the desired element to greater degree than its average crustal abundance.

b. There must be enough of the ore mineral to make extraction profitable.

c. The sale price of the element must be greater than the costs of mining and extraction.

d. All of the possible answers are correct.

**Polymorphs (minerals like diamond and graphite that have the same chemical composition but are nevertheless different minerals) exist because

a. the elements of which they are made contain atoms of different atomic mass.

b. their mineral structures differ based on the different temperature and pressure conditions under which they formed.

c. impurities are present in the crystal structures.

d. their mineral structures differ due to the effects of the organic processes by which they formed.

**What properties are required for a mineral to be used as (a) an abrasive, (b) jewelry, and (c) a source of iron?

In: Other

1.How are volcanic activity and plate tectonics related? 2.Describe the 5 characteristics (definitional) of minerals and...

1.How are volcanic activity and plate tectonics related?

2.Describe the 5 characteristics (definitional) of minerals and the principal physical properties. What physical properties would you use to identify quartz, feldspar and mica in the field.

3.There are three major types of volcanoes. What are they? What are their characteristics and their dangers?

In: Other

For the following descriptions, identify a metamorphic rock that would go with them: a. A magma...

For the following descriptions, identify a metamorphic rock that would go with them:

a. A magma chamber that intruded where a swamp used to be.

b. A deposit of clay/mud at a convergent plate boundary.

c. A magma chamber that intruded at an old beach (be sure to include a color).

d. A high grade rock found in a mountain range

In: Other

A) Out of three soil types tested (Sand, Greenhouse Mix, and Field Soil), which would be...

A) Out of three soil types tested (Sand, Greenhouse Mix, and Field Soil), which would be expected to have the highest and which would have the lowest organic matter content? Why?

B) Knowing what you do about soil physical and chemical properties, which of the three soil types do you think would be the best for plant growth in a natural environment? Why?

C) Why is knowing the organic matter content of the soil important to a researcher in soil science? Why is it important to a manager (e.g. a farmer or silviculturalist)?

In: Other

Materials in the nano-scale may exhibit remarkable properties. Give three examples. (15 points)

Materials in the nano-scale may exhibit remarkable properties. Give three examples. (15 points)

In: Other

IF a collected soil sample was classified as silty clay loamusing the Soil Analysis Chart (Figure...

  1. IF a collected soil sample was classified as silty clay loamusing the Soil Analysis Chart (Figure 2 in the experiment description document), what properties would you expect in the sample? (You should mention properties such as the color, porosity, and potential nutrient availability of the soil).   

In: Other

What are minerals, what are their important physical properties, how are they formed (in general) where...

What are minerals, what are their important physical properties, how are they formed (in general) where are they found in nature (in general with any examples that you have researched). Why are they important and how are they used in society with concrete, specific examples of at least 3 minerals and the many ways each mineral is used.

In: Other

Describe how its structure impacts its function in terms of chemical bonding and intermolecular forces

Polystyrene, addition polymerization, styrene monomer.


Describe how its structure impacts its function in terms of chemical bonding and intermolecular forces (ex. you are looking deeply at how the properties of the molecule are the result of the intermolecular and intramolecular forces present);


In: Other

Soil is a heterogeneous entity which is described by its physico-chemical properties.

Soil Components and Properties

Soil is a heterogeneous entity which is described by its physico-chemical properties. Make a list of these physico-chemical properties and describe how each one determines the suitability (or otherwise) of the soil for plant growth.

In: Other

describe three different soil chemical or physical properties that are affected by soil organic matter content....

describe three different soil chemical or physical properties that are affected by soil organic matter content. In full detail explain how each soil characteristic is affected.

In: Other

The book talks about different kinds of communities and the different interactions that take place in...

The book talks about different kinds of communities and the different interactions that take place in these communities. Chapter 6 discusses eleven different types of biomes and the impact humans have had on these environments. Read all eleven descriptions. Select the three biomes that you believe have been the most negatively impacted by humans.  Select one negative impact humans have had on each biome. Suggest at least one way that we can work to help cut down or eliminate the human threats that the biomes face.
You will have three biomes; you will write about one negative impact and one solution with each biome.

In: Other

This assignment is designed to familiarize you with the physical, chemical, and hazardous properties that are used to properly classify hazardous wastes.

Hazardous Waste Categories 2 page essay

This assignment is designed to familiarize you with the physical, chemical, and hazardous properties that are used to properly classify hazardous wastes. The management and disposal of hazardous wastes depends on which category the hazardous waste is assigned. Some wastes are neutralized; others are incinerated or solidified. Properly classifying a hazardous waste ensures that the waste is compatible with allowable treatment technologies available for each class of hazardous waste, and it helps to ensure that workers will not be harmed when treating a misclassified waste.

Your assignment is to answer the following questions on hazardous waste in two parts.

Part A

Describe the different categories of hazardous waste that can be found in homes and residential buildings. Explain this using a table listing the properties that make each category hazardous. Based on the hazardous properties, propose your idea on how these wastes should be stored while waiting for periodic collection by the local community.

Part B

For a comparison between residential and industrial generators, what are four examples of hazardous wastes that are generated in a vehicle maintenance facility? Explain using a table to list the properties that make each category hazardous. For each hazardous waste identified, in your opinion, what are the biggest concerns that need to be addressed when the wastes are in storage for collection by a waste hauler?

In: Other

Explain why the same surface roughness values do not necessarily represent the same type of surface

Explain why the same surface roughness values do not necessarily represent the same type of surface. Please give some examples. Hint: surfaces that have the same Ra values, may be are very different geometrically and have different tribological performance. Give examples.

In: Other

Cubic boron nitride is used as an abrasive in machining steel as an alternative to diamond,...

Cubic boron nitride is used as an abrasive in machining steel as an alternative to diamond, whereas hexagonal boron nitride is frequently used as a lubricant in electronic and high-temperature applications. Explain how these different properties result from different crystal structures and bonding in this material. (Hint: think about the different crystal structures of carbon!)

In: Other

Describe examples of how different methods of dating events and rocks were used to reconstruct the...

Describe examples of how different methods of dating events and rocks were used to reconstruct the geologic history of the Grand Canyon; and illustrate why the canyon does not represent all of geologic time.

In: Other