| Question | Answer |
|---|---|
| Elements that come in different forms like the element carbon | Allotropes |
| The following are physical characteristics of elements : | Color, odor, state, solubility, malleability, ductility, FP/MP, BP |
| The Russian scientist given credit for creating the periodic table because he predicted accurate properties for elements that had not yet been discovered. | Dmitri Mendeleev |
| Mendeleev's table was based on: | Increasing atomic mass |
| The modern day periodic table is based on: It was changed by who? When was it changed? |
Increasing atomic number It was changed in 1913 by British scientist, Henry Moseley. |
| A German scientist who was working on creating a periodic table around the same time as Mendeleev. | Lothar Meyer |
| The number of protons in the nucleus of an atom. | Atomic number |
| The total number of protons and neutrons (a.k.a. nucleons) in the nucleus of an atom. | Atomic mass (or weight) |
| The vertical columns in the periodic table are called: How many of them are there in the periodic table? |
Families or groups There are 18 families in the periodic table |
| The horizontal rows in the periodic table are called: How many of them are there in the periodic table? |
Periods There are 7 periods in the periodic table |
| Group (family) 1 is called the | Alkali metals |
| Group (family) 2 is called the | Alkali earth metals |
| Group (family) 17 is called the | Halogens |
| Group (family) 18 is called the | Inert gases or Noble gases |
| Elements located to the left of the staircase, except hydrogen, are called: | Metals |
| Elements located to the right of the staircase are called: | Nonmetals |
| The elements that border the staircase, except aluminum and polonium, are called: How many of them are there in the periodic table? |
Metalloids There are 7 of them |
| The large group of elements in the center of the periodic table (groups 3-12) are called the: | Transition metals |
| The elements that are located at the bottom of the periodic table are called the: | Rare earth elements |
