Chemical Symbols and Formulae
The lesson covers the symbols of the first 20 elements and how to write chemical formulae and equations. It explains the differences between elements, compounds, and mixtures, as well as the concept of radicals and valency. The laws of conservation of mass and constant composition are also discussed
- 00:00 “Good day everyone, my name is Adekunle, I am teaching you chemistry and the topic we have now is chemical symbols, formulae and equation. Chemical symbols, formulae and equation. What are chemical symbols? The symbol of...”
- 00:46 “sulfur, we use the phase letter S and some other examples like that. Combination of the phase, the next is, convolution of the phase letter, written in capital and one other letter from the name of the element, written i...”
- 11:31 “from mathematical equation. Mathematical equation can simply be represented with conservation by equals to that for mathematical equation. Yeah, in chemistry that's why it is stated that chemical equation, different 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.
- 07:23 “Elements can be grouped according to their properties, so you find that some elements have similar properties, and they don't share the same properties with some other elements. For example, we have the noble gases. Unde...”
- 10:28 “or topic is the covalent and the ionic bond. If you look at this particular diagram, this is a diagram of water. So, you see an atom of oxygen. You see two atoms of hydrogen on this side, which is H2O. Now, what is coval...”
- 04:08 “What we mean by building block is that they make up other compounds or mixtures. So, everything comes from being a single or everything originated from an element. Elements include your ion, which is called FE. That's th...”
Fundamental and Derived Quantities
This lesson covers the definitions of fundamental and derived quantities in physics. It explains how fundamental quantities serve as the base for deriving other quantities and the importance of measurement in physical science.
- 05:34 “A. A amount of substance is a very powerful concept in the realm of physics, in the realm of chemistry. It could mean the mass of the substance over the molar mass, and it can be, it has another set of relationship, too....”
- 03:57 “of the other quantity. The table below shows the fundamental quantity. There are seven in number, and as I've said earlier, every other quantity are derived from the fundamental quantity. Let's go to the next slide to se...”
- 04:44 “Sometimes can be measured in gram, but the standard unit is the kilogram, which is KG as symbol, the time, which is a function of everything, is measuring second, and the symbol is what is of X. The temperature of an obj...”
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.
- 17:05 “now, is a purest form of code, to have various that will have a piece, you have, you know, other types, which you are going to see very soon. So this particular one contains about 94 to 95 percent of carbon. It has a ver...”
- 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...”
- 21:57 “To antracite, for example, is used for preparing graphite for the manufacture of citratical petrol by catalytic adrogenation of co-que, so that is how antracite co-que can be obtained, all right? So, now, for the wood, y...”
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.
- 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...”
- 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...”
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
- 20:28 “should be able to answer these questions. Number one, explain the term matters with two examples. All right, so an equation to show how a matter can lose electron or electrons to become positively charged. Then question...”
- 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...”
- 18:43 “with the Ozzides. Ozzides ion to release the electrons necessary for reduction of the matter. What am I talking about? So carbon of the A, carbon that reacts with the oxygen gives us CO which is carbon two or that plus t...”
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.
- 28:07 “alkaline, just like you have it in this equation here, showing you how this happens. So, here, we use a general term here, a general symbol here, to show, okay, the various aspects of the soluble metals, so like, for exa...”
- 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...”
- 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...”
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.
- 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...”
- 09:42 “Now we have here lead oxide. When you go through tamarge composition, it breaks into lead and oxygen. Then your oxygen is being taken at this point and for tamarge composition of hydrogen peroxide, because it includes wa...”
- 16:16 “This mix together, you get the salt and hydrogen gas, which becomes zinc chloride and hydrogen. When this is decomposed, you get zinc chloride and you also get hydrogen. And as a result, hydrogen is being stored in this...”
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...”
- 02:25 “Examples of molecules are nitrogen, oxygen, molecule, chloride, sodium, chloride, calcium, chloride. Sodium channels are naturally 5, and the likes of them. The number of atoms in the molecule of element is called atomic...”
- 12:18 “I don't know, they're 12 plus 2, give us 14, 14 plus 16, we give us 30. So you have 30 n equals to 60, divided both sides by the coefficient of n, which is, which is 30, you have to say, by the coefficient of n, which is...”
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.
- 07:53 “These are collets, where solid particles are dispersed, in liquid medium. A very good example of that, some examples of that are starch, glue, jelly, like your petrullo jelly is an example, so take note of that. Now, we...”
- 23:02 “explain this to you, now X represents soluble, there this one at all, there is no effect between, between that, that's what this one means, all right, then this one, of course soluble you are seeing here, then the one yo...”
- 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...”
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,...”
- 00:48 “Also you can become a laboratory assistant. The next career part is chemical engineering. We acknowledge your physics, chemistry, and mathematics. You can become a chemical engineer that involves the processes of combati...”
- 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...”