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Periodic History
History and structure of the Periodic Table
| Question | Answer |
|---|---|
| Father of the modern periodic table | Dmitri Mendeleev |
| Name of the elements in group 1 | Alkali metals |
| Name of elements in group 2 | Alkaline Earth Metals |
| Large group of metals between group 2 and 3 | Transition Metals |
| Name of group 7 | Halogens |
| Meaning of the word Halogen | Salt maker |
| Name of group 8 | Noble Gases |
| Name of the 2 periods together that are taken out of the main block and put underneath the periodic table | Rare Earth Metals |
| What is the ratio of metals to non-metals in the periodic table? | 3/4 to 1/4 |
| Johannes Dobereiner organized elements into groups of _____ called ___________ | 3, triads |
| John Newlands arranged the elements in rows of _________ called ______________ | 8, Octaves |
| What does "periodic" mean? | At regular intervals |
| What is the Periodic Law | When the elements in the periodic table are arranged in order of atomic number their properties repeat periodically |
| What are the vertical columns in the table called? | Groups |
| What are the horizontal rows in the table called? | Periods |
| What do we call metals that behave like non-metals and non-metals that behave like metals? | Metalloids |
| Differences between the modern and Mendeleevs periodic table | |
| Father of the modern periodic table | Dmitri Mendeleev |
| Name of the elements in group 1 | Alkali metals |
| Name of elements in group 2 | Alkaline Earth Metals |
| Large group of metals between group 2 and 3 | Transition Metals |
| Name of group 7 | Halogens |
| Meaning of the word Halogen | Salt maker |
| Name of group 8 | Noble Gases |
| Name of the 2 periods together that are taken out of the main block and put underneath the periodic table | Rare Earth Metals |
| What is the ratio of metals to non-metals in the periodic table? | 3/4 to 1/4 |
| Johannes Dobereiner organized elements into groups of _____ called ___________ | 3, triads |
| John Newlands arranged the elements in rows of _________ called ______________ | 8, Octaves |
| What does "periodic" mean? | At regular intervals |
| What is the Periodic Law | When the elements in the periodic table are arranged in order of atomic number their properties repeat periodically |
| What are the vertical columns in the table called? | Groups |
| What are the horizontal rows in the table called? | Periods |
| What do we call metals that behave like non-metals and non-metals that behave like metals? | Metalloids |
| Differences between the modern and Mendeleevs periodic table | No gaps in modern, More elements in modern Transition metals in separate group in modern Increasing atomic number in modern not atomic mass Noble gases are in modern table |
| Who discovered atomic number enabling us to fill the gaps in the table? | Henry Mosely |
Created by:
ChemistryWaltham
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