Definition and Classification of Chemicals
This lesson defines chemicals and explains their various forms, including solids, liquids, and gases. It also classifies chemicals their hazardous nature and discusses safety measures when using them.
- 21:57 “hazardous chemicals are those ones that are both toxic and reactive because there are some chemicals that are toxic but not reactive and there are some which are reactive but not very toxic. Now, the ability for a chemic...”
- 22:49 “We have the refrigerants which is used as your refrigerating coolants. We have the drugs and of course your fuel or petrol. The second one are the moderately hazardous chemicals. These particular ones are not two hazardo...”
- 21:07 “insulators repair heat or electricity. Then, lastly, laboratory chemicals. They are used in the laboratory to carry out research, findings and investigation or investigative procedures. Now, some of them are oxidizing ac...”
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.
- 10:51 “Bolly point, very high melting point, as I said that. Okay, now look at uses of damod. Now, the unusual brilliant shine, all right? Of damod makes it an invaluable precious of stone. In jewelry, making jewelry, all the j...”
- 10:03 “So why the layer to layer, large distance, makes a graphite to have an open structure. So of course, you see that very, so now, let's now look at the properties of damod now. Have a look at it. So we know that damod is k...”
- 15:32 “electroplating can be done easily. So for manufacturing, light pencils and stove paints, as you can see, there is just a picture showing, you know, an example of that, okay? In particular graphite type, you can use for m...”
Careers and Applications in Chemistry
This lesson covers various career paths available for students studying chemistry, including roles in education, engineering, and health services. It also explains the applications of chemistry in food production, medicine, military, and environmental science.
- 03:54 “The next is clothing. The clothes you wear are tester industries, mixtures of the knowledge of chemistry. There is nothing that has a good aspect, has a good part without having a bad part. What I was talking about next...”
- 01:34 “compared to non-evalupling environmentally friendly product. The next is forensic chemistry. You can see these people in the aspect of crime. The enabled also investigate crime very well. The next aspect, very important,...”
- 04:42 “and even in time pass. We talk about additive drugs like cocaine, heroin, and more things. These are products of chemistry also. The next we look at is corrosion, corrosion of materials are like roasting of iron. By vers...”
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.
- 33:48 “so for example this is actually used by a manufacturer of glass, so you know, add detergents, okay, so then for this one is deployed in baking powder, or to discharge our carbon-folks, right, so as that helps to reduce t...”
- 24:50 “when due to the preparation of compounds, so it actually helps in reliving in digestion, or constipation in medical sector. Of course, medical people should be able to explain the use of these to you properly. So, now, f...”
- 10:07 “of the pericabal two oxides. So, now, let's now look at the properties of carbon two oxides, basically, for the problem of carbon two oxides, it's colorless, of course, you know that, all right? Almost the colorless, mos...”
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.
- 10:07 “Now, what is the use of lead? No. 1. Lead serves as covering for underground water pipes. Those on the ground water pipes that connect water to our houses. They are used, lead are used to serve as a covering tools for th...”
- 15:50 “Siva, goat and diamond are used for making diaries, earrings, necklace, medals and trophies. The wealth of a nation in foreign reserve is determined by the value of the goat. Coal. It is also used in generating power, wh...”
- 09:18 “You can be used for preserving food. You want to preserve your fish or your meat for a long period. Then add the salt to it, and it saves it from microorganisms that will make its perish. No. 3. It is used in the manufac...”
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.
- 08:21 “are important for men. Coal, coal is found in a new good state and also in benure state. It is of great importance to men and the economy at large. Now what's the use of coal? Number one, it is a source of wear for cooki...”
- 04:13 “Number three, it is used in the manufacture of sodium chiosocarbonytes for and the formula is written as e2 cu. So this is very important in the manufacturing of soup. So sodium chiosocarbonytes for is important in manuf...”
- 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...”
Types of Production
This lesson defines production and explains its types, including primary, secondary, and tertiary production. It also discusses the extraction of raw materials and the transformation into finished goods.
- 12:36 “abnormal raw material to be converted to finished product, okay? Production makes it possible for those raw materials to be able to get to that position where one can be able to use them. It brings opportunities to custo...”
- 10:57 “to get those goods to be consumers are either by air, by water or by road, okay? And before those goods will be able to get to the consumer, it may be stored in our warehouse, okay? Until those goods are being needed. An...”
Properties of Oxygen and Hydrogen
This lesson covers the properties, preparation, and tests of oxygen and hydrogen gases. It explains the role of these gases in the environment and their reactions with other elements. The lesson also includes information on the physical states of oxygen.
- 07:20 “If you have seen the welders, when they begin to weld, the fire that comes out is as a result of this. It is used in the large-scale production of sintences gases. It is also used for artificial respiration in oxpitu. An...”
- 12:14 “Hydrogen gas is highly flammable, that is, it can burn and will burn in air at a very wide range of concentration between 4% to 75% by volume. Hydrogen does form compounds with most elements, despite its stability. Despi...”
- 10:34 “more. Hydrogen is denoted with H. It's also a colorless, odorless, tasteless and flammable geyser substance that is in the simplest member of the family of chemical elements. So hydrogen is also odorless, it is tasteless...”
Soil Erosion and Flooding
The lesson covers soil erosion, its causes, and the impact of human activities on soil health. It also discusses methods to control and prevent erosion, as well as the causes and prevention of flooding. Different types of drainage patterns in the community are also described.
- 00:49 “on a given farmland. Number four, student should be able to describe different types of drainage patterns in their community and state the causes of flooding. Number five, student should be able to describe how flooding...”
- 00:02 “Good day, everyone. I am Mr. Ife. The basic science is so tough. And our lesson topic for today is environmental hazards one. A quick run through to the objectives. At the end of the class, students should be able to exp...”
Metals and their compounds
This lesson covers the characteristics of metals, including their ability to lose electrons and form positive ions. It discusses the classification of metals, their physical properties, and examples of common metals such as sodium, magnesium, and aluminum. The lesson also includes information on the
- 00:00 “Hello everyone. I'm Mrs. Olabimpe Ayoko. I'm here to teach SS 3 chemistry and the topic is Metals and its compounds. So at the end of this lesson, everybody is expected to be able to define Metals with examples. The frie...”
- 04:56 “conductors of heat and electricity. Because they have three pi electrons that can always slide over each other. Why no Metas are bad conductors of heat and electricity? Though they have the disadvantages and disadvantage...”
- 04:06 “loses 2 electrons and aluminum. Here, lost 3 electrons to become aluminum ion. So they found very stable hydrase, which are ionic. They all form electromagnetic chlorides. When we say stable hydrase, hydrase are formed w...”