First 20 Elements
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First 20 Elements
⚛️ Part 1: The First 20 Elements
Instructions: Complete the table below with information about the first 20 elements of the periodic table.
| Atomic Number | Element Name | Chemical Symbol | Key Properties/Common Uses |
|---|---|---|---|
| 1 | Hydrogen | H | _________________________ |
| 2 | _____________ | He | _________________________ |
| 3 | Lithium | ____ | _________________________ |
| 4 | _____________ | Be | _________________________ |
| 5 | Boron | ____ | _________________________ |
| 6 | _____________ | C | _________________________ |
| 7 | Nitrogen | ____ | _________________________ |
| 8 | _____________ | O | _________________________ |
| 9 | Fluorine | ____ | _________________________ |
| 10 | _____________ | Ne | _________________________ |
| 11 | Sodium | ____ | _________________________ |
| 12 | _____________ | Mg | _________________________ |
| 13 | Aluminium | ____ | _________________________ |
| 14 | _____________ | Si | _________________________ |
| 15 | Phosphorus | ____ | _________________________ |
| 16 | _____________ | S | _________________________ |
| 17 | Chlorine | ____ | _________________________ |
| 18 | _____________ | Ar | _________________________ |
| 19 | Potassium | ____ | _________________________ |
| 20 | _____________ | Ca | _________________________ |
🔬 Part 2: Element Classification
🏠 Part 3: Elements in Everyday Life
📊 Part 4: Periodic Table Organisation
The periodic table organises elements by their _____________ number. Elements in the same _____________ (vertical columns) have similar properties. The first 20 elements include _____________ noble gases and _____________ alkali metals.
💭 Part 5: Student Notes & Reflection
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