Lesson Notes, Audio Lessons, Exam Questions
Lesson Notes, Audio Lessons, Exam Questions
SS 2 Chemistry Notes (1st, 2nd & 3rd Term) provides detailed, easy-to-understand notes that follow the WAEC and NECO syllabus.
Whether you are revising for exams or seeking clarity on tough topics, these notes cover essential chemistry concepts such as atomic structure, chemical bonding, periodic table, acids and bases, organic chemistry, and more.
Ideal for both students and teachers, these notes support deep learning and exam success across all terms.
Download free SS 2 Chemistry notes for 1st, 2nd, and 3rd term. WAEC and NECO syllabus-aligned notes to help students study and prepare for exams.
Alkanols is a homologous series with general molecular formula of CnH2n+1OH or ROH. The functional group in alkanols is the hydroxyl (-OH) group. Nomenclature The names of alkanols are obtained by substituting “e” in alkanes with “ol”. Example: Methanol –…
Alkynes are the homologous series of unsaturated hydrocarbon with a general molecular formula CnH2n-2.
Alkynes show a high degree of unsaturation than alkenes, hence, they are chemically more reactive than the corresponding alkenes or alkanes.
UNSATURATED HYDROCARBONS These are hydrocarbons in which carbon atoms join with each other by multiple bonds. The multiple bonds can be double bonds e.gAlkenes or triple bonds e.gAlkynes. NOMENCLATURE The process of naming in alkenes is obtained by substituting “ane”…
The alkanes are aliphatic hydrocarbons. Their general molecular formula is CnH2n+2. Hence For n=1 CH4 Methane n=2 C2H6 Ethane n=3 C3H8 Propane n=4 C4H10 Butane n=5 C5H12 Pentane and so on. There is no functional group in the alkane series.…
Organic chemistry is the chemistry of carbon compounds with the exception of compounds such as carbon (II) oxide, carbon (IV) oxide the trioxocarbonate (IV).Carbon has unique ability to form numerous organic compounds because it has ability to catenate. Catenation is…
TITRATION There are two types of quantitative analysis namely: volumetric and gravimetric analysis. Volumetric analysis is based on volume measurement while gravimetric analysis involves direct mass measurement. Volumetric analysis is carried art using Titration. In titration, a standard solution (one…
A mole is a number of particles of a substance which may be atoms, ions, molecules or electrons. This number of particles is approximately 6.02 x 1023 in magnitude and is known as Avogadro’s number of particles.
A solution is a uniform or homogenous mixture of two or more substances. Solution = Solvent + Solute A solute is a dissolved substance which may be a solid, liquid or gas. A solvent is a substance (usually liquid) which…
Water is regarded as the universal solvent. It is a good solvent for many substances. SOURCES OF WATER The following are the sources of water: TYPES OF WATER Water is of two types namely: soft water and hard water. Soft…
HYDROGEN SULPHIDE, H2S Hydrogen Sulphide is found in volcanic gases, Sulphur springs, coal gas and natural gas. LABORATORY PREPARATION Hydrogen Sulphide is prepared in the laboratory by the action of dilute acids on metallic sulphide like Iron (II) Sulphide 2HCl(aq) …
General Properties of The Properties of The Sulphur Group (Group VI Elements) The group VI elements include: Oxygen, Sulphur, Selenium, Tellurium and Polonium. ELECTRONIC STRUCRURE OF SULPHUR GROUP Members of the sulphur family include: Oxygen, Sulphur, Selenium, Tellurium and Polonium.…
Oxides of Nitrogen NITROGEN (I) OXIDE, N2O Nitrogen (I) oxide is known as laughing gas, as it causes uncontrollable laughter when inhaled. Laboratory Preparation The gas is prepared in the laboratory by thermal decomposition of ammonium trioxonitrate (V). Ammonium trioxonitrate…
The group V elements include: Nitrogen, Phosphorus, Arsenic, Antimony and Bismuth. There are more differences than similarities between the elements in this group. ELECTRONIC CONFIGURATION The electronic configuration of the group V elements is as follows: Nitrogen = 7: 1s2…
Halogens (salt formers) are found in group VII of the periodic table. They are the most reactive nonmetals. They have seven valence electrons, they exist as diatomic molecules, and they are coloured and ionizes to form univalent negative ions. They…
Oxygen is the most abundant element on earth. It constitutes 21% by volume of atmospheric air. Occurrence: It occurs as free elements in nature and in combined states. PROPERTIES OF OXYGEN FAMILY Elements in group VI include: Oxygen (O), Sulphur…
Equilibrium can be defined as the state of a system where there is no observable or detectable change in the properties of the system with respect to time. Examples of system in equilibrium STATIC AND DYNAMIC EQUILIBRIUM Static equilibrium is…
Charge flow during electrolysis The coulomb is the electrolytic unit of charge. A current of one ampere is the rate of flow of charge equal to one coulomb per second. The charge is calculated from the knowledge of the number…
The importance of electrochemical cells or galvanic cells lies in their ability to provide us with a portable source of electrical energy. We have already studied that indirect redox reaction is, primarily, the basis of all the electrochemical cells Quite…
It is a well known fact that energy menifests itself in different forms which are interconvertible into one another. Among different forms of energy, the electrical energy plays a very significant role in our daily life. Many chemical transformations and…
The passage of electricity through the electrolytes in their molten or dissolved state can cause chemical changes under suitable conditions. For example, the passage of electricity through the acidified water results in the formation of hydrogen and oxygen gases. The…