Definition of Terms SoluteThis is a substance that dissolves in a solvent to form a solution. It can be solid, […]
Category: Chemistry
Free Chemistry online learning lesson notes and videos for Secondary school and High school students. The lesson notes, videos and interactive slideshows are built on curriculum that is designed to meet national and international O’ Level standard for Senior High School or Senior Secondary school students (SS1, SS2, SS3 or SHS1, SH2, SH3) and Grade 9, Grade 10, Grade 11 and Grade 12 students.
Free online lesson notes and videos for the following exam preparations: WAEC, JAMB, Cambridge O’Level, NECO, GCE, British IGSCE, KCSCE, United States and Canada High School Exam preparations, etc.
You can also use the search box to search for any specific lesson or topic.
Categories
Structure of Water Molecule
Structure of water molecule in the gas phase A molecule of water consists of two hydrogen atoms joined to an […]
Categories
Water Pollution
Water Pollution Based on source of pollution, the following types of water pollution are recognised Water pollution due to city […]
Categories
SOURCES AND TYPES OF WATER
In the Earth’s biosphere, water is essential to all forms of life. Interestingly, it is also the biospheres most abundant […]
Tin does not occur naturally as a free element. The main source is the mineral cassiterite or tin stone, SnO2. In […]
Categories
Tin and Copper
Tin Tin does not occur naturally as a free element. The main source is the mineral cassiterite or tin stone, […]
Categories
Calcium and Aluminium
Calcium Calcium is too reactive to occur as a free metal in nature. It occurs abundantly in the combined state […]
Metals Physical Properties of Metals The physical properties of elements are dependent on the arrangement of their atoms or molecules […]
Categories
Carbohydrates
Carbohydrates (saccharides) – Molecules consist of carbon, hydrogen and oxygen atoms. It is a major food source and a key […]
Categories
Polymers – Plastics
Polymers are giant molecules which are formed by joining together a large number of much smaller molecules thus, forming a […]