Particulate Nature of Matter
The lesson covers the distinction between physical and chemical changes, including examples. It explains the difference between atoms and molecules, describes the arrangement of particles in an atom, and defines atomic number, mass number, and isotopes. The calculation of relative atomic masses of a
- 05:36 “ammonium chloride. We saw these as examples of substances that can subline. Change directly from solid to geostate. You can still get your substances back. So that's a physical change. Magnetization of iron. When you hol...”
- 03:09 “equally have chemical changes. We are new substances are formed. Roasting of iron is also a chemical property of iron. Since a new substance, iron, iron loss, iron loss is a new substance entirely. Quite different from i...”
- 06:26 “calcium in water. A new substance is formed. Lost scene of iron is another chemical change. Because that iron lost is a new compound. Burning of magnesium limping in air. A new substance is formed. Electrolysis of a comp...”
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.
- 00:45 “is an example of a physical change. Also, we have change of states, melting, nucleation, solidification, anything that you do at home that is so easy to do. Those are examples of physical change. We also have magnetizati...”
- 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...”
- 01:39 “very well, you discover that all these changes are not easily reversed. The moment they are formed, you can actually get them back. Also, reaction of matters and trials carbonate for, which dilutes acids, reaction of alk...”
Heat and Temperature
This lesson covers the definitions of heat and temperature, their differences, and the effects of heat on substances. It explains the kinetic molecular theory and how heat causes changes in state, such as solid to liquid and liquid to gas.
- 03:55 “So, for that example, we discover that the states are changing. From solid, when it is ice, to liquid, when it is water, and to vapor, when it is gas or steam. Then, one other effect of heat is there is always change, or...”
- 03:09 “there's always change and increase in the temperature of the body. Likewise, one of the effects is change of states. Where substances are heated? It's either they change from solid to liquid or from liquid to gas. Take,...”
- 07:05 “There is always an increase in temperature. And this increase in temperature leads to the increase in the average kinetic energy of the molecules. The pressure of a container is determined by the number of times gas mole...”
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.
- 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...”
- 30:09 “watching. My name is Uche Ugo. Till the next class.”
- 05:42 “The diagram on the screen is a silicon compound. You can see it is dark gray. This is silicon. It is an element. Now, forms of an element. Elements come in different forms but they all have the same type of atoms. Now, d...”
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...”
- 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...”
- 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,...”
Chemical Industries Overview
This lesson covers the definition of chemical industries and the raw materials used in their production. It explains the classification of chemical industries into heavy and fine chemicals, along with examples of each type. The lesson also discusses the importance of these industries to individuals
- 11:49 “in chemical industry, there is need for you to be evaluated. And the first question I would like to ask you is differentiate between the two types of chemicals. I believe you can answer that by now. And I mentioned any t...”
- 06:22 “will be plastics, explosives, dyes, coagas, ammonia, and so on. And the chemical industries that produce all these are the plastic industries, the dyes, and explosives industries. If our raw material is calcium-throwed c...”
- 01:39 “I believe you are just getting that now. Welcome to chemical industry and food. What are the classes of chemical industry? Basically, chemical industries can be grouped into two, heavy chemicals and fine chemicals. What...”
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...”
- 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...”
- 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,...”
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.
- 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...”
- 03:10 “Now the fresh 20 elements are also a good overview of the different element groups. They also occur in more everyday chemical reactions. The elements are listed in order of increasing atomic number. You will be discussin...”
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
- 12:19 “You must have seen your geats or some ions that have undergone some chemical reaction. If you look at the picture, you will notice that this picture has undergone the process of roasting. The initial color of the ions ha...”
- 13:51 “When you use your hand to touch the ion, the roast flick is that particle that comes out. So, it falls off the ion and exposes the new ion. Which can then also begin to roast. So, the ion has stages. So, once the first p...”
- 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...”
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
- 13:06 “you don't say N2, it should be ordinary, it will be ordinary key, it will be ordinary sodium, which is N8. And then in simple chemical reactions, radicals would be main words. On change, radicals, it's main, on change. I...”
- 10:44 “mass canada be created, no destroyed. If you want to see mass, mass canada be created, no destroyed. And the next law we talk about, states the law of definite proportion, or constant composition, we say that all pure sa...”
- 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...”
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.
- 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...”
- 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...”
- 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...”
Work, Energy and Power
This lesson covers the definitions of work, energy, and power. It explains potential and kinetic energy as forms of mechanical energy. The lesson also includes calculations related to work done and the concept of power as the rate of doing work.
- 09:52 “You prove what we call a teen plate. We also have chemical energy. Chemical energies are stored in bones. We have covalent and ionic bones. Now, these kind of energies exist in atomic, molecular or element states. Now, t...”
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...”
- 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...”
- 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...”