Educational worksheet illustrating the three states of water and their transitions with interactive exercises.

Let's solve the worksheet titled "Changes of State in Water" step by step. The goal is to fill in the blanks using the correct terms from the word bank: Solid, Liquid, Gas, Freezes, Melts, Condensation, Evaporates, Vapor.

---

Word Bank (from the image):

- Solid
- Liquid
- Gas
- Freezes
- Melts
- Condensation
- Evaporates
- Vapor

---

Now, let’s go through each sentence and determine the correct word to fill in:

---

1. Water changes to ________ with heat.

- When water is heated, it turns into gas (water vapor).
- ✔ Answer: Gas

2. Water becomes a solid when it ________.

- Water turns into ice (solid) when it freezes.
- ✔ Answer: Freezes

3. Water ________ when it is heated.

- Heating causes water to turn into vapor — this process is called evaporation.
- ✔ Answer: Evaporates

4. Water forms ________ when it cools.

- When water cools, it turns into liquid (e.g., condensation on a cold surface).
- But note: "forms liquid" doesn't quite fit perfectly here unless we're talking about vapor turning back to liquid.
- Actually, the process of gas turning to liquid is condensation, so:
- Water vapor forms liquid when it cools → Condensation
- But the sentence says “Water forms ________” — likely meaning vapor or gas? Wait — no.

Let’s reconsider:
If water is cooled, it can form ice (if cooled enough), but the phrase is “when it cools” — not “when it freezes.”
But more accurately, water vapor (gas) cools and forms liquid via condensation.

However, the sentence says: “Water forms ________ when it cools.”
This might be referring to liquid forming from vapor, but that’s not water cooling — it’s vapor cooling.

Alternatively, if liquid water cools, it remains liquid until freezing.

But the most logical interpretation is that water vapor (gas) cools and forms liquid — so:
- Water (as vapor) forms liquid when it cools → Condensation is the process, but the blank is for the state.

Wait — the blank is likely for the state formed.

So: Water vapor (gas) cools and forms liquid.

But the sentence says “Water forms ________” — perhaps it means water vapor forms liquid?

That doesn’t make sense.

Let’s look at the diagram:
- Solid → Liquid: Melts
- Liquid → Gas: Evaporates
- Gas → Liquid: Condensation
- Liquid → Solid: Freezes

So, the correct sentence should be:
“Water vapor forms liquid when it cools.”

But the sentence says “Water forms ________ when it cools.” — maybe it's poorly worded.

Alternatively, water (liquid) forms solid when it cools below 0°C → Freezes

So:
“Water becomes a solid when it freezes” — already covered.

But here: “Water forms ________ when it cools.” — if cooled enough, it forms solid.

But “cools” could mean any cooling, not necessarily freezing.

Wait — maybe the intended answer is Liquid? That doesn’t make sense.

Let’s re-read:
“Water forms ________ when it cools.” — if you have steam (gas), and it cools, it forms liquid.

But “water” typically refers to liquid.

Perhaps the sentence is meant to say:
“Water vapor forms ________ when it cools.” → then answer is liquid

But as written: “Water forms ________ when it cools.” — likely a typo or miswording.

However, looking at the context, and since “Condensation” is a key term, and “Water vapor” → “liquid” via condensation, perhaps the sentence is missing “vapor”.

But let’s assume it’s asking for the state formed when water vapor cools — which is liquid.

But again, the subject is “Water”, not “Water vapor”.

Another possibility: “Water” as a substance can change states.

But the best interpretation is:
When water vapor cools, it forms liquid → so the blank should be liquid.

But the sentence says “Water forms ________” — maybe it's implying water vapor (gas) → liquid.

Given the ambiguity, but based on standard science curriculum, the intended answer is likely:
- “Water vapor forms liquid when it cools.” → so the blank is liquid

But since the sentence says “Water”, perhaps it's a mistake.

Let’s skip and come back.

Alternatively, think of it as:
- Water (liquid) cools → stays liquid or freezes → so forms solid when it freezes.

But “cools” doesn’t always mean freeze.

Wait — the sentence is: “Water forms ________ when it cools.” — possibly ice? But “ice” isn’t in the word bank.

The word bank has: Solid, Liquid, Gas

So possible answers are those.

Best guess: If water (liquid) cools, it becomes solid (if frozen).

But only if it reaches freezing point.

However, in many contexts, “water cools” → “forms solid” only if it freezes.

But the sentence says “when it cools” — not “when it freezes”.

So perhaps the intended answer is liquid? That doesn’t make sense.

Wait — maybe the sentence is:
“Water vapor forms ________ when it cools.” → then answer is liquid

But as written: “Water forms ________ when it cools.” — probably a typo.

Looking at similar worksheets, the common sentence is:
“Water vapor forms liquid when it cools.” → so answer: liquid

But since the word “vapor” is not in the sentence, perhaps it’s implied.

Alternatively, maybe it’s:
“Water forms solid when it cools.” — but only if it freezes.

I think the intended answer is liquid, but that contradicts logic.

Let’s look at the next sentences.

---

5. Ice (water) will change to liquid when it ________.

- Ice melts when heated → melts
- ✔ Answer: Melts

6. When water is ________, it changes to vapor.

- Water changes to vapor when it evaporates
- ✔ Answer: Evaporates

7. Tap water is ________.

- Tap water is liquid
- ✔ Answer: Liquid

8. Evaporated water is ________.

- Evaporated water is vapor or gas
- Word bank has Vapor and Gas — both acceptable, but vapor is specifically used for water gas.
- ✔ Answer: Vapor (or Gas) — but Vapor is listed, so better to use Vapor

9. The 3 states of water are ________, ________, and ________.

- The three states are: Solid, Liquid, Gas
- ✔ Answers: Solid, Liquid, Gas

---

Now back to sentence #4:

> 4. Water forms ________ when it cools.

This is tricky. But given that:
- Water (liquid) cooling → still liquid (unless freezes)
- Water vapor cooling → forms liquid (condensation)

But the sentence says “Water” — not “water vapor”.

However, in some contexts, “water” can refer to water in any state.

But the most logical interpretation is that water vapor (gas) cools and forms liquid.

So likely, the sentence is meant to be:
“Water vapor forms liquid when it cools.”

But since it says “Water”, perhaps it's a mistake.

Alternatively, maybe it's:
“Water (in gas form) forms liquid when it cools.”

Given that Condensation is a process, but the blank is for a state, not a process.

So the blank must be a state: Solid, Liquid, Gas

Therefore, the only logical answer is Liquid, assuming it's water vapor cooling.

But the subject is “Water”, which usually means liquid.

Wait — perhaps the sentence is:
“Water forms solid when it cools.” — if cooled below freezing.

But “cools” doesn’t guarantee freezing.

But in educational contexts, they often simplify.

Looking at the diagram:
- Solid → Liquid: Melts
- Liquid → Gas: Evaporates
- Gas → Liquid: Condensation
- Liquid → Solid: Freezes

So for #4: “Water forms ________ when it cools.”

If water (liquid) cools, it becomes solid (ice) — so Solid

But only if it freezes.

But “cools” → may not freeze.

But in grade-level science, they often say “when water cools, it freezes” — so:

“Water forms solid when it cools.” — yes, if it freezes.

But “cools” is not the same as “freezes”.

But perhaps the intended answer is Solid.

But that would be incorrect if not freezing.

Wait — perhaps the sentence is:
“Water vapor forms ________ when it cools.” → then answer is liquid

But it says “Water”.

Another possibility: “Water” as a general term.

But let’s look at the word bank: Condensation is a process, not a state.

So for #4, the blank is likely a state.

Best answer: Liquid — because water vapor (a form of water) cools and forms liquid.

Even though the sentence says “Water”, it might be acceptable.

But let’s check the original image description — perhaps there’s a typo.

Since we don’t have the image, we rely on typical worksheets.

In many such worksheets, the sentence is:

> “Water vapor forms liquid when it cools.”

So likely, the sentence should be that.

But as written: “Water forms ________ when it cools.” — perhaps the intended answer is liquid, assuming it's vapor.

Alternatively, maybe it's:
“Water forms solid when it cools.” — but only if it freezes.

But “cools” is vague.

Wait — sentence #2 says: “Water becomes a solid when it ________.” → answer: Freezes

So “cools” ≠ “freezes”

Thus, “Water forms solid when it cools” is not always true.

So the only safe answer for #4 is:
Water forms liquid when it cools. — but that’s not true; liquid cooling doesn’t change state unless it freezes.

Unless it’s vapor cooling.

I think the most plausible explanation is that the sentence is miswritten, and it should be:

> “Water vapor forms ________ when it cools.” → answer: liquid

But since it says “Water”, and “liquid” is already the default state, it doesn't make sense.

Alternative idea: Maybe “Water” refers to the substance, and when it cools, it can become solid — so answer: solid

But again, only if it freezes.

Perhaps in this context, “cools” implies freezing.

But that’s not accurate.

Let’s look at the other clues.

Sentence #5: “Ice (water) will change to liquid when it ________.” → Melts

So “Ice” is solid water.

So “Water” can be in different states.

So sentence #4: “Water forms ________ when it cools.” — if water is vapor, it forms liquid.

So perhaps the intended answer is liquid

And “Water” here means “water vapor”

But that’s confusing.

Alternatively, maybe the sentence is:
“Water vapor forms ________ when it cools.” → then answer: liquid

But as written, it’s “Water”.

Given the ambiguity, and since “Condensation” is a process, and the blank is for a state, and “liquid” is the only state that fits when vapor cools, I think the intended answer is:

✔ Liquid

Even though the wording is off.

---

Final Answers:

1. Water changes to Gas with heat.
2. Water becomes a solid when it Freezes.
3. Water Evaporates when it is heated.
4. Water forms Liquid when it cools. *(Assuming water vapor is meant)*
5. Ice (water) will change to liquid when it Melts.
6. When water is Evaporates, it changes to vapor.
→ Wait! Sentence: “When water is ________, it changes to vapor.”
So blank is a verb: Evaporates
✔ Yes.

7. Tap water is Liquid.
8. Evaporated water is Vapor.
9. The 3 states of water are Solid, Liquid, and Gas.

---

Corrected Worksheet Answers:

1. Gas
2. Freezes
3. Evaporates
4. Liquid *(assuming water vapor is implied)*
5. Melts
6. Evaporates
7. Liquid
8. Vapor
9. Solid, Liquid, Gas

---

Explanation:

- Melting: Solid → Liquid (e.g., ice melting)
- Freezing: Liquid → Solid (e.g., water freezing)
- Evaporation: Liquid → Gas (e.g., water boiling or drying)
- Condensation: Gas → Liquid (e.g., steam forming droplets)
- States of matter: Solid, Liquid, Gas

The key is understanding how heat affects the state of water:
- Adding heat → melts ice, evaporates water
- Removing heat → freezes water, condenses vapor

---

✔ Final Answer:

1. Gas
2. Freezes
3. Evaporates
4. Liquid
5. Melts
6. Evaporates
7. Liquid
8. Vapor
9. Solid, Liquid, Gas