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
- 15:34 “However, this will result into a solution. When the chalk is placed into a water, you have a chalk solution. So, solvent, example of a solvent, is water. Now, in the picture, you see an example of solute. It is like a po...”
- 14:42 “When the substance dissolved in a substance, it is called a solute. Now, any substance that is dissolved in a liquid solvent to create a solution is called a solute. Example is a chalk. When a chalk is placed in a water,...”
- 16:30 “A solution is a special type of homogeneous mixture composed of two or more substances. An example that you have in the house is salt. You place your salt in water, you mix it together with the spoon. You will notice tha...”
Solution and Solubility
This lesson covers the concepts of solution, solute, and solvent. It defines solubility and explains different types of solutions, including saturated, unsaturated, and super saturated solutions. Factors affecting solubility and calculations related to solubility are also discussed.
- 00:02 “Good day, everyone. My name is Charles Christopher. I'm the chemistry teacher, and I'll be taking you on the topic solution and solubility. Now, before I begin, I would like to give you the objective of the lesson. Now,...”
- 03:08 “Then you have a gas dissolving the liquid, an example of that is a carbon dioxide in soda. Then a gas in solid, a very good example of that is a hydrochloric gas in palladium metal, all right? Then another type or catego...”
- 20:38 “will correlate with increasing pressure for gaseous techniques of that, so for polarity, now there's a popular saying that actually goes here that say like dissolves like, okay, like dissolves like, so now basically for...”
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.
- 13:50 “involves a solute material and a solvent and the form what is referred to as solution. Take, for example, what's every one of us, we are used to, that's drinking of Gary. When you pour the Gary into the water, it mixes p...”
- 14:37 “the solute material which is placed on the liquid does not dissolve properly. Then we have colloid, which is the third mixture type. Now, for colloid, the materials which are two or more elements or constituent elements...”
- 19:34 “is used in hospitals for detecting the sex of a baby. Now, we have agrochemicals. Agrochemicals, as the name implies, are those used for agricultural purposes. We have the fertilizers, the organic manuals. We have the pe...”
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...”
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.
- 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,...”
- 02:21 “and their lives, which also includes laboratory assistants. The next career part is manufacturing industry. These people are the researchers and chemical engineers. They also involve in manufacturing produce like steel a...”
- 00:02 “Good day students. My name is Adekunle. I'll be teaching you the subject chemistry. The topic is introduction to chemistry. What is chemistry? Chemistry is a branch of pure science that deals with the properties, composi...”
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.
- 20:20 “is used for the manufacture of pharmaceutical products and also as a solvent, okay? So for co-ta, co-ta is a mixture of more than 200 different substances, which can be separated by a fraction of distillation, so of cour...”
- 22:46 “will have a polyethnose acid or wood gas, actually, so then for the polyethnose acid, which is a liquid fraction of co-tax million etanote acids, all right? Which contain propanone, which contain metanone, and also some...”
- 18:41 “So how do we carry this carbonization process? Now basically, you find out that, like we mentioned before, for carbonization, it's a complex mixture, what's it called? Compounds composed of a million of carbon, all right...”
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.
- 35:26 “so you'll find out that for me, they then also measure three metals, basically that are very soluble in water, in the form of the hydro-t transocarbonyl. Thanks for watching, my name is Charles Christopher, till next tim...”
- 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...”
- 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...”