Atoms and Periodic Table worksheet with matching, fill-in-the-blank, and definition exercises.

Let’s solve this step by step.

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Part 1: Match the family with its most important characteristics.

We need to match each group (1–5) with the correct letter (A–E).

- Alkali metals (Group 1): These are the *most reactive metals*. So, #1 → D
- Alkaline earth metals (Group 2): They are reactive but less than alkali metals — often called the “second most reactive metal” group. So, #2 → E
- Transition metals: These include common metals like iron, copper, nickel — they have high melting points and are widely used. So, #3 → B
- Halogens (Group 17): These are nonmetals and very reactive — especially fluorine and chlorine. So, #4 → A
- Noble gases (Group 18): These don’t react under normal conditions. So, #5 → C

✔ Matches:
1 – D
2 – E
3 – B
4 – A
5 – C

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Part 2: Fill in the chart using the word bank.

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

Recall basic atomic structure:

- Proton: Has a *positive* charge, located *inside the nucleus*
- Electron: Has a *negative* charge, located *outside the nucleus*
- Neutron: Has *no charge* (neutral), located *inside the nucleus*

So fill the table:

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

Now go one by one:

a) Malleable = can be shaped without breaking → usually means *hammered into sheets*
→ “A substance can be hammered into sheets”

b) Ductile = can be drawn into thin strands → usually *stretched into wires*
→ “A substance can be stretched into wires”

c) Luster = how light bounces off something → related to being *shiny* and how it *reflects* light
→ “How light reflects off a substance; how shiny it is.”

d) Brittle = breaks easily when hit or bent
→ “Easily broken into pieces.”

e) Conductor = carries energy → usually *electricity* or *heat*
→ “A substance that can carry electricity or heat”

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Final Answer:

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