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Atoms
atoms
Term | Definition |
---|---|
open circuit | when there is a gap in the circuit and electricity can not flow |
closed circuit | when there is not gap and electricity can flow |
nucleus | where the proton and neutrons live |
shells | where the electrons are located |
atom | all matter is made up of atoms |
proton | have a positive charge and live in the nucleus. They do not move. Symbol is a plus sign + |
electrons | have a negative charge and are in shells outside of the nucleus. They move from atom to atom. Symbol is a minus sign - |
neutrons | They have a neutral or no charge. They are found in the nucleus and do not move. |
positive charged atom | When an atom has more protons than electrons it is positively charged. |
negative charged atom | When an atom has more electrons than protons it is negatively charged. |
Balanced atom | This is the goal of all atoms. When there are the same number of protons and electrons it is balanced or has a neutral charge. |