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UNIT 1 VOCAB
15 unit 1 vocabulary words
Term | Definition |
---|---|
Model | A pattern,plan,representation |
Atom | The smallest unit of everything |
Nucleus | The center of an object |
Proton | A subatomic particle that has a positive charge. |
Neutron | A subatomic particle that has no charge. |
Electron | A subatomic particle that has a negative charge. |
Atomic number | the number of protons found in the nucleus of an atom. |
Atomic symbol/nuclear symbol/Chemical Symbol | Standard nuclear notation shows the chemical symbol, the mass number and the atomic number of the. |
Subatomic particle | Particle smaller than atoms. |
Molecule | Two or more atoms held together by a chemical bond. |
Lewis Structure | Lewis structures are diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule. |
Bhor Model | This model of the atom depicts positively charged nucleus surrounded by electrons that travel in a circular motion. |
Electron Shell | An orbit followed by electrons around an atom's nucleus. |
Valance Electron | An electron that is associated with an atom, and that can participate in the formation of a chemical bond. |
Matter | Something that occupies space. |