- Units , measurement, SI units and derived units.
- Atomic number ,mass number and Atomic species.
- Inside the atom , electron, proton and neutron.
- Bases
- Acids
- Indicators
- Acid and bases
- Periodic table
- Conductors and non-conductors
- States of matter: gaseous, gas laws , ideal gas equation
- Organic compounds, characteristics of carbon atoms
- IUPAC nomenclature-part1
- IUPAC NOMENCLATURE PART 2
- iupac-nomenclature-part-3
What is matter ? Matter is a term used in physics or chemistry to refer to anything that has mass and occupies space. In other words, it is the substance of which all physical objects are made. This includes everything we can see, touch, and interact with in the universe. Matter is composed of elementary particles, the most common of which are atoms and molecules. Atoms are the basic building blocks of matter, and they consist of a nucleus, composed of protons and neutrons, surrounded by electrons. Molecules, on the other hand, are groups of atoms chemically bonded together. There are four fundamental states of matter: 1. Solid: In solids, atoms or molecules are tightly packed and have a fixed shape and volume. The particles vibrate around fixed positions. 2. Liquid: Liquids have a definite volume but take the shape of their container. The particles in liquids are still close together, but they can move more freely than in a solid. 3. Gas: Gases have no fixed shape or volume and ca
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