General science worksheet on metals and non-metals, including definitions, property comparison, and element classification.

Let's solve this step by step based on the definitions and general scientific knowledge of metals and non-metals.

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🔍 Step 1: Understand the Definitions

From the image:

- Brittle: A material that is delicate and easily broken.
- Malleable: Can be bent or shaped.
- Dense: Contains a lot of particles in a small space.
- Conductor: Allows heat or electricity to flow through it.
- Ductile: Can be bent without breaking and drawn into wires.
- Sonorous: Makes a sound when hit.

We are to use these concepts to fill in the table.

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✔ Step 2: Fill in the Table – Properties of Metals and Non-metals

| Characteristic | Metals | Non-metals |
|--------------------|-------------------------|--------------------------|
| 1. Appearance | Shiny | Dull |
| 2. Density | High | Low |
| 3. Strength | Strong | Weak |
| 4. Malleable | Yes | No |
| 5. Brittle | No | Yes |
| 6. Conductor | Good (or Yes) | Poor (or No) |
| 7. Sonorous | Yes | No |
| 8. Ductile | Yes | No |

> 💡 Explanation for each row:
>
> - Appearance: Metals are shiny (lustrous), non-metals are usually dull.
> - Density: Metals are generally denser (more mass per volume).
> - Strength: Metals are strong; non-metals tend to be weak or brittle.
> - Malleable: Metals can be hammered into sheets (e.g., gold); non-metals break.
> - Brittle: Non-metals break easily; metals do not.
> - Conductor: Metals conduct heat/electricity well; non-metals do not (except graphite, but it's an exception).
> - Sonorous: Metals make a ringing sound when struck (like a bell); non-metals don’t.
> - Ductile: Metals can be drawn into wires (e.g., copper); non-metals cannot.

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✔ Step 3: Classify Elements as Metal or Non-metal

Now classify the given elements:

9. Copper → Metal
*(Common metal, used in wiring)*

10. Fluorine → Non-metal
*(A halogen gas, very reactive)*

11. Nitrogen → Non-metal
*(Gas, part of air)*

12. Neon → Non-metal
*(Noble gas, used in lights)*

13. Sodium → Metal
*(Soft, silvery metal, reacts with water)*

14. Sulfur → Non-metal
*(Yellow solid, found in rocks and volcanic areas)*

15. Mercury → Metal
*(Only metal that is liquid at room temperature)*

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✔ Final Answers:

#### Table: Properties of Metals and Non-metals

| Characteristic | Metals | Non-metals |
|--------------------|---------------|----------------|
| 1. Appearance | Shiny | Dull |
| 2. Density | High | Low |
| 3. Strength | Strong | Weak |
| 4. Malleable | Yes | No |
| 5. Brittle | No | Yes |
| 6. Conductor | Good | Poor |
| 7. Sonorous | Yes | No |
| 8. Ductile | Yes | No |

#### Classification of Elements:

9. Copper → Metal
10. Fluorine → Non-metal
11. Nitrogen → Non-metal
12. Neon → Non-metal
13. Sodium → Metal
14. Sulfur → Non-metal
15. Mercury → Metal

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✔ Summary:
Metals are typically shiny, dense, strong, malleable, ductile, good conductors, sonorous, and not brittle.
Non-metals are dull, less dense, weaker, brittle, poor conductors, not sonorous, and not malleable or ductile.

This classification helps distinguish between metals and non-metals based on physical properties.