Educational worksheet for identifying and classifying elements as metals, nonmetals, or metalloids using the periodic table.

Let's solve this step-by-step based on the image you've provided.

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Part 1: Fill in the blanks

The periodic table contains three types of elements:

- Metals – hard, shiny elements that conduct heat and electricity.
- Nonmetals – poor conductors of heat and electricity.
- Metalloids – have some properties of metals and some of nonmetals.

✔ These are standard definitions:
- Metals: Typically lustrous, malleable, ductile, good conductors (e.g., iron, copper).
- Nonmetals: Often dull, brittle, poor conductors (e.g., sulfur, oxygen).
- Metalloids: Elements with intermediate properties (e.g., silicon, arsenic).

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Part 2: Label the periodic table

We are given a simplified periodic table with color coding:
- Blue = Metals
- Pink = Nonmetals
- Purple = Metalloids

There are three arrows pointing to different regions:

1. Arrow pointing to Group 1–2 and transition metals (blue area) → This is Metals
2. Arrow pointing to purple diagonal band (Groups 13–17) → This is Metalloids
3. Arrow pointing to pink elements on the right (Groups 15–18) → This is Nonmetals

So, label the boxes accordingly:
- First box (pointing to blue): Metals
- Second box (pointing to purple): Metalloids
- Third box (pointing to pink): Nonmetals

> Note: The long row at the bottom (lanthanides/actinides) is typically grouped under metals (transition metals), so it’s all Metals.

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Part 3: Classify the elements

Now classify each element as metal, nonmetal, or metalloid:

1. Sodium (Na)
- Group 1, alkali metal → Metal

2. Iodine (I)
- Group 17, halogen → Nonmetal

3. Silicon (Si)
- Group 14, located on the metalloid line → Metalloid

4. Zinc (Zn)
- Group 12, transition metal → Metal

5. Krypton (Kr)
- Group 18, noble gas → Nonmetal

6. Barium (Ba)
- Group 2, alkaline earth metal → Metal

7. Antimony (Sb)
- Group 15, located on the metalloid line → Metalloid

8. Radium (Ra)
- Group 2, radioactive alkaline earth metal → Metal

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✔ Final Answers:

#### Fill in the blanks:
- Metals – hard, shiny elements that conduct heat and electricity.
- Nonmetals – poor conductors of heat and electricity.
- Metalloids – have some properties of metals and some of nonmetals.

#### Label the periodic table:
- Arrow 1 (left side, blue): Metals
- Arrow 2 (diagonal purple): Metalloids
- Arrow 3 (right side, pink): Nonmetals

#### Classify the elements:
1. Sodium (Na) → Metal
2. Iodine (I) → Nonmetal
3. Silicon (Si) → Metalloid
4. Zinc (Zn) → Metal
5. Krypton (Kr) → Nonmetal
6. Barium (Ba) → Metal
7. Antimony (Sb) → Metalloid
8. Radium (Ra) → Metal

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Let me know if you'd like a visual version or explanation for any specific element!