"Various Minerals" PPT

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"Various Minerals" PPT

Part One: Definition of Minerals

Natural compounds and a few natural elements present in the earth's crust have relatively fixed chemical compositions and properties. Most are solid, and some are liquid or gaseous. Minerals are the building blocks of rocks and are generally solid, but there are also liquid minerals such as mercury.

Rocks are made of minerals.

Minerals that are valuable for mining are called minerals.

Minerals are the basic units that make up minerals and rocks.

Part 2: The role of ore

Sulfur plays a large role in daily life and industrial sulfur production.

Mainly used in rubber tires, fireworks and firecrackers, pesticides, chemical fertilizers, food industry, flowers, trees, fruit trees, daily chemical aid, and industrial products

Mainly divided into two categories. Namely: food grade sulfur, industrial grade sulfur

Food grade sulfur: For example, sulfur has bleaching and antiseptic effects in food production. It is an essential material for corn starch processing.

It also plays a very important role in the processing of dried fruits.

Industrial grade sulfur: such as electronic semiconductors, plastics, latex, papermaking, pharmaceutical fine chemicals, industrial ceramics, building materials, auxiliary materials and other industrial sectors

Style classification

Sulfur powder, sulfur blocks, sulfur granules, sulfur tablets, liquid sulfur

The main purpose

1. as refractory materials

2. as conductive material

3. As wear-resistant lubricating material:

4. Graphite has good chemical stability.

5. For casting, sand foundry, stamping and high temperature metallurgical materials:

6. Used in atomic energy industry and defense industry:

7. Graphite can also prevent boiler scaling. Tests by relevant units have shown that adding a certain amount of graphite powder to water (approximately 4 to 5 grams per ton of water) can prevent boiler surface scaling. .

8. Graphite can be used as pencil lead, pigment, and polishing agent. After special processing, graphite can be made into various special materials for use in relevant industrial sectors.

9. electrode

Part 3: After-class exercises

1. Fill in the blanks

1. Usually people call _______________ minerals.

2. Minerals are mined in different ways. Coal that is distributed on the surface or buried shallowly can be mined by ________; coal that is buried deeply needs to be mined by ________.

3. Under the guidance of the teachings of my country's famous geologist ________, my country has developed large oil fields one after another, making full use of my country's ________ resources.

4. Mineral resources on the earth ________, but they cannot be ________, they must be mined and utilized in a planned way.

2. Be a good little judge:

1. Coal, oil, and natural gas are all important energy minerals. ( )

2. The process of refining metal from metal minerals is very simple, just knock it and pick out the metal. ( )

3. The word "petroleum" was proposed by Chinese geologist Li Siguang. ( )

4. Our country is rich in mineral resources, and the reserves of many minerals rank among the highest in the world. However, our country has a large population and the per capita possession of mineral resources is very low. ( )

5. Our country is a country rich in mineral resources, so we can exploit them as much as possible and use them liberally. ( )

Keywords: Qingdao version fifth grade science PPT courseware for the second volume free download, various mineral PPT downloads, .PPT format;

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Update Time: 2024-09-11

This template belongs to science courseware Qingdao Edition Fifth Grade Science Volume 2 industry PPT template

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