Term
What does IUPAC stand for?
How is it significant? |
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Definition
International Union of Pure and Applied Chemistry
The IUPAC creates the rules for naming newly discovered elements. This allows every scientist around the world to overcome language barriers and communicate with symbols. |
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Term
| What are three things new elements are normally named after? |
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Definition
1. famous scientists (einsteinium, nobelium)
2. it's country of origin (californium)
3. it's latin name |
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Term
| What are some characteristics of Democritus' Atomic model? |
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Definition
- all matter can be divided into smaller and smaller pieces
- different atoms have different sizes and geometric shapes
- atoms are in constant motion
- there is empty space between the atoms |
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Term
| What are some characteristics of Aristotle's Atomic model? |
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Definition
- no continuous motion
- no empty space between atoms
- four elements (water, air, fire, earth) combine to make various things (hot, cold, moist, dirty)
- alchemy's theory |
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Term
| What are some characteristics of John Dalton's atomic model? |
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Definition
- tiny particles called atoms
- all identical properties inside same element
- different properties in different elements
- particles not destroyed, only exchanged |
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Term
| What are some characteristics of J.J. Thompson's atomic model? |
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Definition
- found subatomic particles
- electrons inside atom |
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Term
| What are some characteristics of Ernest Rutherford's atomic model? |
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Definition
- found the nucleus
- coined the term proton to name the positive charge |
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Term
| What are some characteristics of James Chadwick's atomic model? |
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Definition
- found neutrons?
- protons and neutrons weigh the same |
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Term
What are the rows called in the periodic table?
The columns? |
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Definition
rows: period
column: group or family |
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Term
| define alkali earth metal |
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Definition
| an element in group one of the periodic table |
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