Free Printable Periodic Table Worksheets - Free Printable

Let's solve each part of this chemistry worksheet step by step.

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Part 1: Match the family with its most important characteristics

We are given five families and five characteristics (A–E). We need to match them correctly.

1. Alkali metal
→ These are in Group 1 (e.g., Li, Na, K). They have one valence electron and lose it easily → very reactive metals.
✔ D – Most reactive metal

2. Alkaline earth metal
→ Group 2 (e.g., Mg, Ca). They have two valence electrons, less reactive than alkali metals but still quite reactive.
✔ E – 2nd most reactive metal

3. Transition metals
→ Groups 3–12. They include metals like Fe, Cu, Ni. They are common, strong, and have high melting points.
✔ B – Common metal, high melting point

4. Halogen family
→ Group 17 (e.g., F, Cl, Br). These are highly reactive nonmetals that gain one electron easily. Fluorine is the most reactive nonmetal.
✔ A – Most reactive nonmetal

5. Noble gases
→ Group 18 (e.g., He, Ne, Ar). They have full valence shells and are extremely stable — they rarely react.
✔ C – Do not react

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✔ Matching Answers:

1. Alkali metal → D
2. Alkaline earth metal → E
3. Transition metals → B
4. Halogen family → A
5. Noble gases → C

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Part 2: Fill in the chart using the word bank

Word bank: negative, neutral, positive, inside nucleus, outside nucleus

| Particle | Charge | Location |
|------------|-------------|--------------------|
| Proton | positive | inside nucleus |
| Electron | negative | outside nucleus |
| Neutron | neutral | inside nucleus |

> Explanation:
- Protons have a positive charge and are located inside the nucleus.
- Electrons have a negative charge and are found outside the nucleus in electron shells.
- Neutrons have no charge (neutral) and are also inside the nucleus.

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Part 3: Fill in the blanks using the word bank

Word bank: broken, stretched, hammered, wires, sheets, electricity, heat, reflects, shiny

a) Malleable – A substance can be hammered into sheets
→ Malleability means the ability to be shaped or flattened without breaking.

b) Ductile – A substance can be stretched into wires
→ Ductility is the ability to be drawn into thin wires.

c) Luster – How light reflects off a substance; how shiny it is.
→ Luster describes the shine or reflectivity of a material.

d) Brittle – Easily broken into pieces.
→ Brittle materials shatter or crack when hit.

e) Conductor – A substance that can carry electricity or heat
→ Conductors allow flow of electric current and thermal energy.

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✔ Final Answers:

#### Matching:
1. D
2. E
3. B
4. A
5. C

#### Chart:

| Particle | Charge | Location |
|------------|------------|------------------|
| Proton | positive | inside nucleus |
| Electron | negative | outside nucleus |
| Neutron | neutral | inside nucleus |

#### Fill in the blanks:
a) hammered, sheets
b) stretched, wires
c) reflects, shiny
d) broken
e) electricity, heat

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