Chemistry Tuition Singapore Secondary Science Tuition – Atoms. Ions and Molecules

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Chemistry Tuition Singapore Secondary Science Tuition – Atoms. Ions and Molecules

ATOMS

• There are more than 100 types of elements existing naturally in this world.
• An element is a substance consisting of one type of atom only. It cannot be broken down chemically into simpler substances
• Atoms of different elements are different in
• An atom is the smallest particle of a substance.
• It has a nucleus which contains protons and
• Electrons move around the nucleus in the electron shell or orbit

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