Question | Answer |
The smallest part of an element that is still that element | atom |
They are very small | atoms |
They do not change in chemical reaction | atoms |
A positively charged atomic particle | proton |
A negatively charged atomic particle | electron |
A neutral atomic particle | neutron |
Neither positively nor negatively charged | neutral |
They contain protons, electrons and neutrons | atoms |
Like electrical charges | repel each other |
Unlike electrical charges | attract each other |
The number of protons in each atom of that element | The atomic number of an element |
The atomic number of an element | the number of protons in each atom of that element |
It has the same number of protons and electrons | an atom |
The center of an atom | nucleus |
A pat that electrons follow around the nucleus | orbit |
The total number of protons adn neutrons in an atoms nucleus; also called atomic weight | atomic mass |
These things are in the nucleus of an atom | protons and neutrons |
These things move in orbits or shells around the nucleus | electrons |
The number of protons and neutrons in an atom | atomic mass |
Atomic mass - atomic numbers = | the number of neutrons |
All of the elctrons orbits or paths | electron shell |
These are found in shells around the nucleus of an atom | electrons |
It can only hold a certain number of electrons | an electron shell |
It has 8 electrons except for the K shell, which has 2 | a complete outer shell |