Sources of Energy
The lesson covers different sources of energy, including renewable and non-renewable types. It explains how energy is used in society and discusses the environmental impacts of various energy sources. Specific examples include petroleum, natural gas, solar energy, and wind energy.
- 00:02 “Good day, class. My name is Eme Nnamdi John. I'll be taking you on physics, through the topic, energy and society. Now, our first objective today, at the end of the study, Lena should be able to know one, the source of e...”
- 02:23 “We have nuclear energy, these are the release of energy in the society. When we release energy into the society, is the nuclear energy. We have the solar energy that is energy got it from the sun, that is what we call th...”
- 16:26 “The acid drain, like you can see in the diagram, we have this. We have the HNO3. We have H-Wed S-O-F-O. Now, the acid drain destroys things in the environment, like the trees you can see, the trees. Now, coming down, we...”
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
- 00:10 “Good day, everyone! My name is Mr. Ife and I'm your basic science instructor. Our lesson today is "Says, Water, and Rustam". A quick round through the objectives. At the end of the class, students should be able to expla...”
- 01:01 “Students should be able to state the properties, the types, and the uses of water. Water, we all know that water is very important, and you are so familiar with water. Water is an organic, which is not derived from livin...”
- 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...”
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.
- 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...”
- 25:21 “Understanding the type of chemical which you are using helps you to prepare your hand glove, your head, your warmer, whatever you need to deal with this particular chemical, especially if it is a hazardous chemical. Also...”
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.
- 00:45 “of the first topics in the syllabus "Physis". When we talk about "Physis", what do we mean by "Physis"? We talk about the story of natural phenomena, which has to be with an event or fact that is hard to explain sometime...”
- 00:00 “Hello, my name is Tijani Musa Alad-Bukho, I'm your Physiist teacher. The topic before us today is fundamental and derived quantities. At the end of the lesson, students should be able to differentiate between fundamental...”
- 25:24 “So the last one is in terms of units, the unit of mass is kilogram and that of weight is newton. Evaluation, divine, fundamental and the life quantity in your own language to the best of your knowledge. So explaining tha...”
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.
- 05:29 “The various steps we take are scientists to solve problems. And the first step we are like to mention is observation. What is observation? The use of our senses to look at our environment. And see, oh, this is how things...”
- 07:02 “And with this class, I believe I can also test you. These are the evaluations. Number one, make sure five carriers that require the knowledge of chemistry. Number two, least five carriers that do not require the knowledg...”
- 06:14 “by continuing your experiments. That is under further experiments. Your camera for the experiments and allows other scientists to test your hypotheses. After they have done a good job on that, we created theory within th...”
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
- 00:00 “Hello everyone, my name is Akeredolu O.O. Mrs. I am your chemistry teacher and a lesson for today is "particulate nature of matter at one." At the end of the lesson, the students should be able to distinguish between che...”
- 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...”
- 04:00 “heat change. Examples of physical and chemical changes are given. Physical changes we have examples like the solution of common salt in water. When you pour your salt in water, it dissolves. It looks like you are not see...”
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.
- 00:00 “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...”
- 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...”
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.
- 00:02 “Good day, everyone. My name is Charles Christopher, I'm the chemistry tutor, and I'll be taking you on the topic carbon and its compounds. Now, before we begin, I would like to give you some of the objectives of the less...”
- 00:48 “of wood and coal, then transoccarbonate and hydrogen transoccarbonate as the last one. All right, now introduction. Basically, this is one of the very vital topics we have in chemistry. So I believe that the classes is r...”
- 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...”
Factors of Production
The lesson covers the concept of production and its types. It explains the factors of production, division of labor, and specialization. The advantages and disadvantages of division of labor and large scale production are also discussed.
- 02:25 “to consume it, your biscuits is the consumer goods, your notebook is the consumer goods, your uniform, your sandals, those are consumer goods. The moment you pick them up you can use them. Capital goods are those goods t...”
- 03:16 “this level of production that's primary production are commonly referred to as the extractive industries because their work is extraction. So they are getting the minerals out of the ground. They are getting the food out...”
- 35:09 “So that will all of our lessons for theory of production. Till next lesson. Bye.”
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.
- 00:02 “Good day, everyone. My name is Charles Christopher. I'm the chemistry teacher, and I'll be taking you on the topic, all sides of carbon. Now, before I begin, I would like to give you some of the objectives of the class....”
- 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...”
- 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...”
Radioactivity and Its Types
This lesson covers the definition of radioactivity and the characteristics of radioactive elements. It explains the three types of radiation: alpha particles, beta particles, and gamma rays, along with their properties. The lesson also includes the concept of half-life and decay constants.
- 00:00 “Good day everyone. My name is Mrs. Akinola. I will be teaching you physics. Today we will be looking at radioactivity. Let's quickly look at the objective of today's lesson. At the end of today's lesson, you should be ab...”