Karst Topography
This lesson covers the characteristics of karst regions, including their formation and features. Students will learn about limestone as a sedimentary rock, the effects of rainwater on limestone, and the typical vegetation and drainage patterns found in karst areas.
- 14:49 “We have it as a dam. Still August 8th here. We have it at in Calago. We have it at Calaba Cross River. We have it at Sopoto. And all this limestone are used for both cement, sometimes glasses and feet. Limestone is also...”
- 13:14 “It's formed by the joining of stalagmites hanging from the roof of the cave. And they stalagmite growing from the floor of the cave. St stalactite coming down, stalagmite growing, then they join. Then you're going to hav...”
- 16:23 “So you can have a fair idea of what is all about. So it is important, as we don't go there free. When I go there, you pay. So it also brings money to the government. And it's only available to learn more. So even in some...”
Solid Minerals in Nigeria
This lesson covers the types of solid minerals found in Nigeria and their locations. It also discusses the importance and uses of these minerals, along with how to draw a map showing their distribution across the country.
- 03:27 “in Abelkuta and of course in Ogun State in Shagam, Shokuto, Lokodja, Upila in a dual state and of course Asaba, Ashaka in Balji state. Now what is the importance of limestone? It is found to be of great importance to man...”
- 02:29 “to form products which are useful to man. There are about 34 mineral resources found in Nigeria and which includes column bites, gold, zinc, diamond, limestone, tin, copper, etc. Scientific study of minerals is called mi...”
- 09:10 “iron. And also for benzene, in making of plastics, dyes and explosives. And the last one is phenol for making drugs and antiseptics, etc. You have seen the several minerals that are found in some places in Nigeria. You w...”
Solid Minerals in Nigeria
This lesson covers the types of solid minerals found in Nigeria, their locations, and their uses. Students will learn about specific minerals such as limestone and their importance to the economy. A map of Nigeria showing the distribution of these minerals will also be drawn.
- 04:17 “And where can limestone be found in Nigeria? In a boy's state. In a place called on Kalagu. In a way, Koru, Nia Abe Okuta. In Shagam. That's in Okun State. It can also be found in Shokotu, Lokoja, Edo State, and Baochist...”
- 05:05 “Now, what's the use of limestone? It can be used to make cement and concrete. When you want to build your house, a house must be built on the solid foundation. And without cement and concrete, the house can fall apart. I...”
- 15:03 “the vegetation is going to kill some of the plants, it's going to be responsible for some of the animal behavioural pattern. Crystallistic of solid minerals. Diamonds. Diamonds is hard with natural state and it is a lot...”
Oxides of Carbon
This lesson covers the two types of carbon oxides: carbon monoxide and carbon dioxide. It explains their formation, characteristics, and methods of preparation in the laboratory. The lesson also defines the term allotrope and discusses the economic importance of these oxides.
- 17:49 “in when I was explaining the laboratory, preparation of carbon dioxide. Okay, this is TSO4L, of course, this one is a kind of round bottom flux, okay? Then inside at the bottom of this one bottom flux, you have here to b...”
- 17:03 “So, basically, like here, the metallic carbonate, we use here is calcium carbonate. So, it's calcium carbonate here is actually be heated with XCl, that they use here. You can also use H2SO4. Okay, the same result would...”
- 21:43 “So, now, here we have this. You see, this is a metal here, magnesium metal. They react with this to give us this one, and also this. So, we actually reduce this carbon to this. That's what you are seeing here, okay? So,...”
Carbon and its Allotropes
The lesson covers the characteristics of carbon as an element and its various forms, known as allotropes. It explains the presence of carbon in nature, its compounds, and the two types of carbon oxides. The importance of carbon in living systems and its economic significance is also discussed.
- 23:36 “My name is Charles Christopher, till next time. [MUSIC]”
- 01:36 “So now, carbon occurs in the free native states as well as in the combined states. So carbon and its compounds are widely distributed in nature. So of course, as we go on, we'll see it in the lesson. Then now, in each el...”
- 00:48 “of wood and coal, then transoccarbonate and hydrogen transoccarbonate as the last one. All right, now introduction. Basically, this is one of the very vital topics we have in chemistry. So I believe that the classes is r...”