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...”
- 13:47 “Number two, it is used in filling balloons and airship. The airship needs hydrogen to be filled, so that it can float on air. Number three, for adenine of animal oils and certain vegetable oils. Number four, for rocket f...”
- 11:26 “Now what's the physical property of hydrogen? At standard temperature and pressure of hydrogen is a non-toxic, non-metallic, odorless, tasteless, colorless and highly combustible, diatomic gas, with the molecular formula...”
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
- 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...”
- 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...”
- 08:13 “form Acalis. Water Acalis. Acalis are soluble hydroxide. So firstly for potassium. When potassium reacts with oxygen gas of the air that's thin. It gives you potassium OZI which is basic OZI. Basically because this react...”
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.
- 13:12 “Then, also, you have iodine five oxides be reduced to iodine, all right? So, as you can see, this equation here is showing that. Then, basically, uses of CO2 oxide. So, we have uses of CO2. So, CO2 oxide can be used as f...”
- 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...”
- 25:36 “So, are inorganic compounds. Of course, we know that we actually form numerous compounds with different metals. That's probably the most important metals in the electrochemical series. So, whenever carbon falls out, it d...”
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
- 06:38 “When two hydrogen atoms are bound to an oxygen atom, the outer electron shell of oxygen is filled. Let's move to decomposition of water. How do we decompose water? I told you before, the main component of water is hydrog...”
- 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...”
- 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...”
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...”
- 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...”
- 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...”
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
- 13:57 “And now you balance hydrogen. Check the atom count. You have 3 hydrogen A, you have 2 hydrogen A. The best I can balance this is, I put 2 A. Like I told you, you don't balance down. You don't balance by the soft grit. Yo...”
- 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...”
- 15:36 “4 N O, nitrogen 2 Z. Then you have 2 times this to give us 6 water. With this, you can check whether your equation is balanced or not by doing atom count. On the return side, on the return side, my nitrogen, my hydrogen,...”
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.
- 24:36 “volume of hydrogen is 280, is 280. Over time of hydrogen is 40 seconds. Over volume of x is 490. Over time of s, I'm looking for it. Let the molecular mass of s you are giving, or we calculate it, we obtain 50 all over t...”
- 23:38 “of 1. Now comparing with hydrogen and the gas s, R8 over Rs equals to square root of that m represents our relative molecular mass this time over these, put in the values. And then Gavin's knowledge that rate is volume o...”
- 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...”