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.
- 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...”
- 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...”
- 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...”
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.
- 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...”
- 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...”
- 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...”
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
- 05:50 “Water molecules made up of two elements, hydrogen atom and oxygen atom. From the picture you would see hydrogen atom and the oxygen atom. A single oxygen atom contains six electrons. If you count, you will notice that yo...”
- 01:49 “They are odorless, tasteless, and they are colorless, which is the main constituent of Earth's hydrosphere and the fluids of all living organisms. So water is embedded in the fluids of all living organisms. It is vital f...”
- 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...”
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...”
- 11:30 “After you earlier, the reaction of hydrogen with metas or nonmetas is known as hydrace. So when hydrace with nonmeta, they form covalent compounds. Examples are ammonia. We have methane stage 4. We have hydrogen chloride...”
- 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...”
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...”
- 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...”
- 04:41 “That is using most of the most of the countries, okay? So, now, solid in solid, an example of that is a sterile silver, all right? Then, now, how do we characterize a solution? Now, characteristics of solution. Now, it c...”
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.
- 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...”
- 28:54 “So, this one is a compound of carbon, because carbon is actually found there as an element there, all right? This is actually M2, M2 here, I show you that, okay, if I put this N here, if I put this N here, you have N2 CO...”
- 20:54 “Basically, when it's raining. So, what we have most time is actually the form of acid that is formed, there is a weak acid. It's all called carbonic acid, basically, okay? Which has a pH of five, okay? That, this equatio...”
Gas Laws Overview
This lesson covers the basic gas laws including Boyle's Law and Charles's Law. It explains the relationship between volume, pressure, and temperature of gases, and introduces the Kelvin scale for temperature. The general gas equation PV = nRT is also discussed.
- 17:59 “of oxygen. I believe you understand that. For marbogadro's law, this is the next law. This is that equal volume of gases at the same temperature and temperature, contain the same number of molecules. Given the, a particu...”
- 19:35 “over Avogadro's number. 6.02 times 10 is the power 23. If I want to add the molar volume, number of moles equals to, okay, it's already here, equals to volume and the molar gas volume is 22.4 DMQ. This is what I've shown...”
- 18:49 “Avogadro's constant. Avogadro's constant. Let's compute number of moles. Number of moles is equal to mass over molar mass. Number of moles is also equal to volume over molar gas volume. And number of moles from Avogadro'...”
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.
- 23:36 “My name is Charles Christopher, till next time. [MUSIC]”
- 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...”
- 02:21 “in many minerals, such as cell hydrocabons, in natural gas, petroleum, et cetera. In air, carbon dioxide is present in small quantity, which is 0.03 percent. Of course, we know that part of the constituents of air, so ou...”
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...”