CHEMICALS : LSUS
Basic Science JSS2 Third Term
WEEK THREE
CHEMICALS
Content
REFERENCE
Precious seed BASIC SCIENCE FOR JUNIOR SECONDARY SCHOOLS BOOK 2
CHEMICALS
A substance composed of chemical elements or a substance produced by or used in chemical processes. Chemical classes are groupings that relate chemicals by similar features. Chemicals can be classified by their structure (e.g., hydrocarbons), uses (e.g., pesticides), physical properties (e.g., volatile organic compounds [VOCs]), radiological properties (e.g., radioactive materials), or other factors. The chemical classes identified below are ones used by the Agency for Toxic Substances and Disease Registry (ATSDR) to address hazardous substances.
Classes of Chemicals
Based on use
- Pharmaceutical/cosmetics e.g. Mood stabilizers: lithium and valpromide
- Hormone replacements: Premarin
- Oral contraceptives: Enovid, "biphasic" pill, and "triphasic" pill
- Stimulants: methylphenidate, amphetamine
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