The website has the complete lesson note for all the subjects in secondary school but this piece showcases the JSS2 Basic Science Lesson Note on Chemicals. You can use the website search button to filter out the subject of interest to you.
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Topic : Chemicals 1
MEANING OF CHEMICALS
Chemicals are substances with specific molecular compositions.
Chemicals can be in form of gas, liquid, or solid. It can also be in simple or complex form. They can be in form of elements, compounds, and mixtures.
Mercury
Chemical elements are basic substances that are often used to make other products. Mercury is one of the few elements that are liquid at room temperature. This element is poisonous and can be absorbed through the skin.
CLASSIFICATION OF CHEMICALS
Classification based on uses.
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