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Key Points of an Atom and a Molecule
- An Atom is defined as the smallest particle of an element that can exist.
- Atoms are so small that they cannot be seen with naked eyes.
- Different sizes of circles and different sybols are used to represent atoms.
- Models and diagrams are used to make the study and understanding easier.
- A molecule is made of two or more atoms of same or different kinds chemically combined together.
- In elements, molecules consist of a fixed number of one kind of atom combined together.
- In compounds, molecules consist of a fixed number of 2 or more different tupes of atoms together.
- A chemical formula shows the number and kinds of atoms contained in each molecule.
Related Atomic and Molecule Topics:
What is an atom? , Molecule, Chemical Formula.
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