| periods definitions |
| # | Definition | Sets |
| 1 | the rows in the periodic table are called ______ | 24 sets |
| 2 | horizontal rows in the periodic table | 21 sets |
| 3 | what are the rows called? | 18 sets |
| 4 | the horizontal rows of elements in the periodic table | 16 sets |
| 5 | horizontal rows | 14 sets |
| 6 | rows | 9 sets |
| 7 | horizontal rows on the periodic table | 9 sets |
| 8 | horizontal rows of the periodic table | 9 sets |
| 9 | horizontal rows of elements in the periodic table | 7 sets |
| 10 | rows on the periodic table | 6 sets |
| 11 | the horizontal rows on the periodic table | 6 sets |
| 12 | rows (1-7) on the periodic table | 5 sets |
| 13 | rows on the periodic table - all elements in each row have the same number of electron shells | 5 sets |
| 14 | unit of time into which eras are subdivided | 4 sets |
| 15 | horizontal rows of elements | 4 sets |
| 16 | the horizontal rows in the periodic table | 3 sets |
| 17 | a horizontal row of elements in the periodic table | 3 sets |
| 18 | rows in the periodic table | 3 sets |
| 19 | horizontal rows of periodic table; within period, elements near each other have similar properties | 3 sets |
| 20 | subdivisions of an era in geologic time. | 3 sets |
| 21 | the horizontal rows of the periodic table | 3 sets |
| 22 | horizontal rows of elements in the periodic table. have regular phys/chem properties. | 2 sets |
| 23 | rows of the periodic table | 2 sets |
| 24 | horizontal rows in the periodic table are.... | 2 sets |
| 25 | the horizontal rows of elements in the periodic table. | 2 sets |
| 26 | horizontal rows of elements on the periodic table | 2 sets |
| 27 | if the list includes incomplete sentences, no _________________ are required | 2 sets |
| 28 | rows of elements | 2 sets |
| 29 | side to side elements. | 2 sets |
| 30 | the rows of the periodic table | 2 sets |
| 31 | a horizontal row of elements in the periodic table of elements | 2 sets |
| 32 | rows across the periodic table | 2 sets |
| 33 | horizontal rows of elements in the periodic table, those that are close to each other ten to be more similar | 2 sets |
| 34 | sub divisions of eras | 2 sets |
| 35 | eras are subdivided into periods | 2 sets |
| 36 | the rows of the periodic table are called ______ | 2 sets |
| 37 | portions of time | 2 sets |
| 38 | a horizontal row on the periodic table; different elements from different families that change according to a pattern | 2 sets |
| 39 | represents number of electron shells | 2 sets |
| 40 | what eras are divided into | 2 sets |