click below
click below
Normal Size Small Size show me how
S8P1.a
Distinguish between atoms and molecules.
Term | Definition |
---|---|
Atom | The smallest unit of a element that maintains the properties of that element. |
Element | A substance that cannot be separated or broken into simpler substances by chemical means |
Nucleus | In physical science, an atom's central region, which is made up of protons and neutrons. |
Proton | a subatomic particle that has a positive charge and that is found in the nucleus of an atom |
Neutron | a subatomic particle that has no charge and that is found in the nucleus of an atom |
Electron | a subatomic particle that has a negative charge |
Atomic Number | the number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element |
Neutral | Having no overall charge |
Atomic Mass | The mass of an atom expressed in atomic mass units |
Chemical Symbol | A one- or two-letter code that represents an element |