| Question | Answer |
| A series of nonmetal elements from group 17 of the periodic table | Halogens |
| The number of protons found in the nucleus of an atom | Atomic number |
| A mathematical function that describes the wave like behavior if either one electron or a pair of electrons in an atom | Electron cloud |
| The smallest unit of an element that maintains the properties of that element | Atom |
| Group 18; unreactive
Helium, neon, argon, krypton, Xeon, radon | Noble gases |
| Group 2;
Beryllium, magnesium, calcium,... | Alkaline earth metals |
| Group 1;
Lithium, sodium, potassium, rubidium, cesium, francium | Alkali metals |
| An electrically excitable cell that processes by electrical and chemical signaling | Neurons |
| The standard unit that is used for indicating mass on an atomic or molecular scale | Atomic mass unit |
| A subatomic particle p or p+ and a positive electrical charge of one elementary charge | Proton |
| An atom that has the same number of protons as other atoms of the same element do but that has a different number of electron | Isotypes |
| An atoms central region, which is made upon protons and neurons | Nucleus |
| Vertical column of elements, share chem properites | Group |
| Horizonantal row of elements | Period |
| The mass of a specific Isotypes | Atomic mass |
| The total number of protons and neurons in an atomic nucleus | Mass number |
| A subatomic particle that has a negative charge | Electron |
