chemistry 2
🇬🇧
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20 questions
| 🇬🇧 | 🇬🇧 |
| What are groups in the periodic table | The columns numbered 1, 2, 3, 4, 5, 6, 7, 0 |
| What can the group tell you about the electrons in an atom | How many electrons are in the outer shell |
| What are periods in the periodic table | The rows in the periodic table |
| What can the period tell you about the electrons in an atom | How many shells the atom has |
| Why did Mendeleev put some elements in groups | Because they had similar chemical properties |
| Why did Mendeleev leave gaps in the periodic table | For elements that have not been discovered yet |
| What is an ion | An atom that has lost or gained an electron |
| 1 | 1 |
| 1 | 1 |