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....”
- 08:34 “So, we're also using the metal of reduction, reduction process. So, of course, you know what reduction is, all right? Carbon for oxide is prepared in the laboratory, all right? By using metal of reduction, okay? So, this...”
- 15:30 “So, carbon two oxides are actually four. Then at the bottom, so we have carbon four oxides that we produce, because we have excess oxygen in the charcoal port, actually, basically, okay? So, now, carbon monoxide, and the...”
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.
- 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...”
- 01:36 “So now, carbon occurs in the free native states as well as in the combined states. So carbon and its compounds are widely distributed in nature. So of course, as we go on, we'll see it in the lesson. Then now, in each el...”
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
- 01:34 “the symbols of the different elements that combine chemical to form the compound, E, G, calcium carbonate, or calcium triadal carbonate for. Whereby, it contains carbon and it contains calcium, one atom of calcium carbon...”
- 17:18 “ion 3 chloride. The next KOH plus CO2 to give us K2 CO3 plus H2O. And then the next is C6 H2FO6 plus O2 to give us CO2 plus H2O. And the last is KCLO3 to give us KCL plus O2. All the equations are no balance. You need to...”
- 16:27 “And on the product side, I actually have 4. I have 6 times 2, 6 times 2, hydrogen. And that's what we give me 12. You can see it's balanced. The last but not the least, which is oxygen 502. 5O2 means 5 times 2. 5 times 2...”
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
- 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...”
- 17:11 “very expensive. So this one is preferred, preferred to that one, except that the very reactive methods, you can't both carry out electrolysis on them. So reduction of others. The less electro-positive methods like zinc,...”
- 09:56 “with carbon falls out of the atmosphere. So for this one, which is also carbonic acid, a weak acid. Why this one also reacts with water? So give you H2 SO3. So still we have SO3 also, which is an hydride, can still react...”
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.
- 05:34 “Now to the chemical properties of oxygen. Oxygen is a highly reactive element. It can react and highly pragmatic, and is easily capable of combining with other elements. Oxygen can combine with hydrogen, it can combine w...”
- 07:20 “If you have seen the welders, when they begin to weld, the fire that comes out is as a result of this. It is used in the large-scale production of sintences gases. It is also used for artificial respiration in oxpitu. An...”
- 06:28 “Oxygen also combines with elements at room temperature, for example, the formation of rust. And water falls on iron, and it's exposed to oxygen. That iron begins to undergo chemical reaction, and it is called roasting. D...”
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.
- 09:08 “5, oh sorry, nitrogen, nitrogen, nitrogen, nitrogen, you have 25.45%, denesis you do for the mole ratio, you calculate there are mole ratios. For carbon, we know that carbon is over 12, hydrogen is over 1, and nitrogen i...”
- 11:32 “First, with the empirical formula and your value of n, which are going to determine first, empirical formula times n will be equal to the relatively molecular mass. This is CH2On, equals to the molecular mass, 60, put th...”
- 08:12 “the relative molecular mass of the compound. It actually gave us the actual number of moles of atoms of each element in one mole of the compound, as we are going to see with a particular example. The compound was found b...”
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.
- 06:30 “Now, for one carbon present in any particular compound of carbon, you have to use it to determine what's referred to as alotrupy. Alotrups of carbon talks about the shapes in which carbon can exist. Now, we have diamond,...”
- 12:11 “ion is one to one. That's why I have NACL. Then we have methane, which is CH4. It's an organic compound. So, you have an atom of carbon and four atoms of hydrogen. So, the ratio of hydrogen to the carbon is four ratio on...”
- 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...”