Chemistry worksheet on properties and classification of matter, featuring a table of elements with names, symbols, and origins.

It looks like you've uploaded a worksheet titled "Unit 1 – Properties and Classification of Matter and Energy", specifically Part I: Elements to Learn NOW! The task asks you to:

- Fill in the name, symbol, and origin of the name for 20 chemical elements.
- Use the periodic table or an online resource (like [http://www.webelements.com](http://www.webelements.com)) to find the information.

Since I can't view images directly, I’ll help you complete the worksheet based on standard knowledge of the periodic table. Here’s the completed version with explanations:

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Completed Worksheet

| Name | Symbol | Name comes from… |
|--------------|--------|------------------|
| 1. Hydrogen | H | Greek *hydro* (water) + *gen* (to generate), meaning "water-former" |
| 2. Lithium | Li | Greek *lithos* (stone), as it was first isolated from a mineral |
| 3. Sodium | Na | Latin *natrium*, from *natron* (a natural salt) |
| 4. Potassium | K | From *kalium*, the Arabic word for *alkali*; symbol from Latin *kalium* |
| 5. Rubidium | Rb | German *rubidium*, from Latin *rubidus* (deep red), due to its spectral lines |
| 6. Cesium | Cs | Latin *caesius* (sky blue), named after its blue spectral line |
| 7. Francium | Fr | Named after France, where it was discovered |
| 8. Beryllium | Be | From *beryl*, a mineral (beryl) containing beryllium |
| 9. Magnesium | Mg | From *Magnesia*, a region in Greece where magnesium minerals were found |
| 10. Calcium | Ca | From Latin *calx* (lime), referring to calcium oxide |
| 11. Strontium| Sr | From Strontian, a village in Scotland where it was discovered |
| 12. Barium | Ba | From Greek *barys* (heavy), as barium compounds are dense |
| 13. Radium | Ra | From Latin *radius* (ray), because it emits radiation |
| 14. Boron | B | From Arabic *bura* (borax), a mineral source |
| 15. Aluminum | Al | From *alumen* (alum), a compound containing aluminum |
| 16. Gallium | Ga | Named after France (*Gallia*), where it was discovered |
| 17. Carbon | C | From Latin *carbo* (coal), as carbon is found in coal |
| 18. Silicon | Si | From Latin *silicis* (flint), related to quartz and flint |
| 19. Germanium| Ge | Named after Germany, where it was discovered |
| 20. Tin | Sn | From Latin *stannum* |

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✔ Explanation of How to Solve This Task

1. Understand the Goal: You're learning key elements, their symbols, and how their names originated—often from Latin, Greek, or geography.

2. Use Reliable Sources:
- Visit [https://www.webelements.com](https://www.webelements.com)
- Search each element by name
- Look under “Name origin” or “Etymology”

3. Pattern Recognition:
- Many elements come from Latin/Greek roots (e.g., *hydro-* = water, *lithos* = stone).
- Some are named after places (e.g., Francium → France, Germanium → Germany).
- Others are named after scientists (not listed here, but common later).

4. Tips:
- Memorize common symbols: H, O, N, C, etc.
- Notice that some names sound similar to their symbols (e.g., Sodium = Na, from *Natrium*).

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Let me know if you’d like this in printable format, flashcards, or need help memorizing them!