Page 4 - E-Science Prep1 2024-2025 t2 Unit1_Neat - Copy
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Molecule: The smallest part of matter can exist freely and carry properties of

matter.                 (2/more atoms join chemically)

Element: The simplest form of the matter that can’t be analyzed.

                                       (Pure substance)
                  It consists of 1 / more similar atom(s). (1 Type of atoms)

Compound: The combination of atoms of 2/more different elements with

constant weight ratio.        (2/more diff. elements join together.)

Atom: The building unit of      Ion: The atom of an element

the structure of any matter.  loses or gains an electron or more
                                during the chemical reaction.

                        Elements

        Metals                 Non-     Noble gas
                              metals
Second Term
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