Water and Its Properties
This lesson covers the composition of water, including its chemical formula H2O. It explains the physical properties of water, such as its states (solid, liquid, gas), boiling and melting points, and its ability to dissolve various substances. The lesson also discusses the importance of water in liv
- 18:58 “And they use the means of water to transport this product into the land. Number two, for drinking. Because water aids digestion, the moment food gets to the saliva, the process of digestion begins. You need water to push...”
- 19:43 “Number three, water is used for domestic purposes. Such as cooking, beating and washing the clothes. Number four, for recreation, such as the swimming pool, you get to the beach, you have fun. Number five, for keeping pl...”
- 01:49 “They are odorless, tasteless, and they are colorless, which is the main constituent of Earth's hydrosphere and the fluids of all living organisms. So water is embedded in the fluids of all living organisms. It is vital f...”
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.
- 20:07 “that are classified under what we call acid and hydrides, okay? So, basically, we know that the many points of carbon for oxide is minus 78 degrees Celsius. All right, that's a multi-point minus 78 degrees Celsius. So, b...”
- 03:56 “True red hotel carbon, okay? So, for the dehydration, basically, what happens if I've explained this already into you? What happens here, basically, is, for it to actually be passed through a dehydrated agent. So, the de...”
- 32:09 “made of whatever in meta, ammonia meta, or radical, all right, so the two, one of the two hydrogen atoms in the molecule, so it's partially replaced, don't forget that, all right, partially replaced, when it is partially...”
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.
- 17:23 “due to shortage, shortage in supply. Providey is number six. We move to prevention of flooding. How do we prevent flooding? Number one, constructions of dams to take excess water that may lead to flooding. Seeing the pic...”
- 15:48 “You can see in the picture the house as collapsed as a result of flooding. Number two, the damage of properties. Number three, deteriorating of health conditions or into water-borne disease. The people living in this env...”
- 11:47 “will make the soil moist. Now the soil needs water. So that it can be moist. In the picture below, you can see an irrigation process where the water is sprinkled all over the place. There by binding the soil particles to...”
Changes of Matter and Atomic Structure
The lesson covers the differences between physical and chemical changes in matter. It explains the concepts of atoms and molecules, their arrangements, and introduces atomic number, mass number, and isotopes. The lesson also includes calculations of relative atomic masses.
- 13:03 “Finally, our molecular formula will simply be C times this 2, H times water times 2, 4, n, o, 2. I believe you understand that, and you can see that from here. The molecular formula is CH2, H4, o2, if you arrange it, you...”
- 00:00 “Good day everyone, my name is Adekunle, I will teach you chemistry. The topic we have now is particularly nature of matter, follow me as we roll. The first is changes of matter, where we have physical change and chemical...”