This section provides complete SS 1 Chemistry notes for first, second, and third terms. They are carefully written and aligned with the WAEC and NECO syllabus, the content supports classroom teaching and personal study.
Topics include the introduction to chemistry, chemical symbols and equations, atomic structure, periodic table, chemical bonding, acids, bases, salts, and more.
Ideal for teachers preparing lesson plans or students seeking revision materials, these Chemistry notes build foundational knowledge and help learners succeed academically.
Access SS 1 Chemistry notes for 1st, 2nd, and 3rd term based on the WAEC & NECO syllabus. Comprehensive topics to guide students and teachers throughout the school year.
CHEMICAL INDUSTRY Chemical industry is define as one that uses chemistry to make chemicals from other chemical substances (raw materials) The important raw materials used in chemical industry include (i)… Read More »APPPLIED CHEMISTRY
HYDROCARBON AND CRUDE OIL Hydrocarbon are very simple organic compound composed mainly of hydrogen and carbon only. The sources of hydrocarbons are coal, natural gases and petroleum. Hydrocarbon can be… Read More »HYDROCARBONS
H2CO3 is formed when CO2(g) is dissolved in water. H2CO3 is a weak dibasic acid. It forms two series of salts: Normal trioxocarbonate (iv) Acidic hydrogen trioxocarbonate (iv) Normal trioxocarbonate… Read More »TRIOXOCARBONATE (iv) ACID
COAL Coal is an impure form of carbon. Coal is a complex mixture of compounds composed mainly of carbon, hydrogen and oxygen with small amounts of nitrogen, sulphur and phosphorus… Read More »COAL AND FUEL GASES
CARBON (iv) OXIDE The percentage composition of carbon (iv) oxide in the atmospheric air is about 0.03% by volume while in dissolved air is about 0.50% by volume. Laboratory preparation… Read More »OXIDE OF CARBON
OCCURRENCE OF CARBON It occurs naturally as diamond and graphite. It occurs in an impure form as coal. It occurs in the combined state as petroleum, wood and natural gases.… Read More »CARBON: OCCURRENCE, ALLOTROPES, USES & PROPERTIES
A base is a substance which will neutralize an acid to yield a salt and water only. Most oxide and hydroxide of metals are bases e.g. Na2O, K2O, MgO, NaOH,… Read More »BASES AND ALKALIS
Definition: An acid is substance which in aqueous solution produces hydroxonium ion (H3O+) or hydrogen ion (H+) as the only positive ion. Also, acids can be referred to as proton… Read More »ACIDS: CLASSES, BASICITY, PHYSICAL & CHEMICAL PROPERTIES
It is often useful to follow chemical reactions by looking at changes in the oxidation numbers of the atoms in each compound during the reaction. Oxidation numbers also play an… Read More »OXIDATION NUMBERS
In chemistry, a compound is a substance that results from a combination of two or more different chemical element s, in such a way that the atom s of the… Read More »COMPOUND
ISOTOPE Isotopes Definition: Isotopes are atoms with the same number of protons, but differing numbers of neutrons. Isotopes are different forms of a single element. Examples: Carbon 12 and Carbon… Read More »THE RELATIVE ATOMIC MASSES OF ELEMENTS
Atoms are the basic units of matter and the defining structure of elements. Atoms are made up of three particles: protons, neutrons and electrons. Protons and neutrons are heavier than… Read More »PARTICULATE NATURE OF MATTER
A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atom s that… Read More »MOLECULES AND ATOMICITY
ELEMENTS Element Definition: A chemical element is a substance that cannot be broken down by chemical means. Elements are defined by the number of protons they possess. These are the… Read More »MIXTURES AND SEPERATION TECHNIQUES
It is often useful to follow chemical reactions by looking at changes in the oxidation numbers of the atoms in each compound during the reaction. Oxidation numbers also play an… Read More »OXIDATION NUMBERS
In chemistry, a compound is a substance that results from a combination of two or more different chemical element s, in such a way that the atom s of the… Read More »COMPOUND
ISOTOPE Isotopes Definition: Isotopes are atoms with the same number of protons, but differing numbers of neutrons. Isotopes are different forms of a single element. Examples: Carbon 12 and Carbon… Read More »RELATIVE ATOMIC MASSES OF ELEMENTS
Atoms are the basic units of matter and the defining structure of elements. Atoms are made up of three particles: protons, neutrons and electrons. Protons and neutrons are heavier than… Read More »PARTICULATE NATURE OF MATTER
A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atom s that… Read More »MOLECULES AND ATOMICITY
Element Definition: A chemical element is a substance that cannot be broken down by chemical means. Elements are defined by the number of protons they possess. These are the first… Read More »ELEMENTS