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 an element that maintains the properties of that element |
Element | A substance that cannot be separated or broken down 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 |
Neutral | Having no overall charge |
Atomic Mass | The mass of an atom expressed in atom mass units |