Educational worksheet on changes in states of matter, featuring questions and diagrams for students to complete.

Let’s go through each question step by step.

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Question 1: Which two changes in state are most likely to occur at Fancy Sprinkles Ice Cream Parlor?

Think about what happens with ice cream:
- Ice cream starts as a solid (frozen).
- When it sits out, it melts into a liquid → that’s melting.
- Sometimes, if it gets too warm and turns to gas (like steam or vapor), that’s vaporization, but that’s rare for ice cream unless it’s boiling — which doesn’t happen in a parlor.
- But wait — sometimes ice cream can freeze from liquid to solid when made → that’s freezing.
- Also, if you leave ice cream out, it melts → melting.
- What about evaporation? Not really visible.
- Actually, the most common changes you’d see:
- Ice cream melting (solid → liquid)
- Maybe water evaporating from surfaces? But not directly related to ice cream.
Wait — think again: In an ice cream parlor, they serve ice cream that’s frozen (solid). If it sits out, it melts (solid → liquid). Also, sometimes they make ice cream from liquid mix — so freezing (liquid → solid) happens there too.

But the question says “most likely to occur” — meaning what do customers observe?

Customers see ice cream melt → melting.

Do they see anything else? Maybe condensation on cups? That’s gas → liquid → condensation.

Actually, let’s think practically:

At an ice cream parlor:
- Ice cream is served cold → it may melt → melting
- The cold ice cream causes moisture in the air to turn into water droplets on the cup → condensation

So both melting and condensation are commonly observed.

✔ So answer: melting and condensation

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Question 2: Which two changes in state are most represented in the water cycle?

Water cycle includes:
- Evaporation (liquid → gas) → from oceans, lakes
- Condensation (gas → liquid) → forms clouds
- Precipitation (not a state change, just falling)
- Freezing (liquid → solid) → snow, hail
- Melting (solid → liquid) → snow melts

The most frequent and large-scale changes:
- Evaporation (water turning to vapor)
- Condensation (vapor turning to clouds)

These are the core processes driving the cycle.

✔ So answer: evaporation and condensation

*(Note: Some might say melting/freezing for seasonal cycles, but evaporation and condensation happen constantly everywhere.)*

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Question 3: When a witch on Halloween puts dry ice in a cauldron, what change in state are her trick-or-treaters most likely to see?

Dry ice is solid carbon dioxide (CO₂).

It doesn’t melt into liquid under normal pressure — it goes straight from solid to gas → that’s sublimation.

You see fog or smoke rising — that’s the gas forming, and sometimes water vapor condenses around it, but the main event is sublimation.

Trick-or-treaters see the “smoke” or “fog” — which is actually the CO₂ gas mixing with moist air, but the key change happening to the dry ice itself is sublimation.

✔ So answer: sublimation

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Questions 4–6: Finish the drawings

We need to draw particles showing how matter changes during each process.

Remember:
- Solids: particles packed tightly, ordered
- Liquids: particles close but moving, less ordered
- Gases: particles far apart, moving freely

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4. MELTING

Left side: Solid (particles in neat grid) → right side should be liquid.

So draw particles still close together, but not in perfect rows — maybe slightly spread out, jumbled.

Example: Draw 12 circles, arranged loosely, not in straight lines.

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5. CONDENSATION

Left side: Should be gas (particles far apart) → right side is liquid (particles closer, clustered).

So left box: draw few circles scattered far apart.

Right box: already has many circles clustered together — that’s correct for liquid.

So for left box: draw 5–6 circles, spaced out widely.

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6. VAPORIZATION

Left side: Should be liquid (particles close) → right side is gas (particles far apart).

Right box already shows particles spread out — good.

Left box: draw particles close together, like in a puddle — maybe 8–10 circles touching or nearly touching.

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Now, since we can’t draw here, I’ll describe what to draw for each.

But the user didn’t ask for explanations — just to solve. Since options are false, we skip teaching and practice.

Final answers for written questions:

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Final Answer:
1. melting and condensation
2. evaporation and condensation
3. sublimation
4. [Draw particles close but not in order — liquid state]
5. [Draw particles far apart — gas state]
6. [Draw particles close together — liquid state]