States of matter interactive worksheet for Grade 8 - Free Printable

Let's solve each question step by step based on the provided diagrams and concepts related to the states of matter.

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Question 4:

> Diagram below shows particles arrangement in three states of matter. Which of the object represents the matter.

We are given three particle arrangements:

1. First Object: Particles are tightly packed in a fixed, orderly pattern (like a grid).
- This represents a solid.
2. Second Object: Particles are close together but not in a fixed order; they can move around.
- This represents a liquid.
3. Third Object: Particles are far apart and randomly arranged.
- This represents a gas.

✔ So:
- First Object → Solid
- Second Object → Liquid
- Third Object → Gas

Answer:
- First Object: Solid
- Second Object: Liquid
- Third Object: Gas

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Question 5:

> Based on the diagram below, choose the states of matter.

The image shows:
- A campfire with wood burning (solid)
- Flames (gas)
- Water in a pot (liquid)
- Steam rising from the pot (gas)
- Lake in background (liquid)
- Air around (gas)

Now label the arrows:

From left to right:
1. Wood (burning) → Solid
2. Fire / Flames → Gas
3. Water in pot → Liquid
4. Steam rising → Gas
5. Lake → Liquid
6. Air / Sky → Gas

But since there are six boxes, likely labeled as follows (based on arrows):

Assuming the arrows point to:
- Top-left box → Steam → Gas
- Middle-left box → Water in pot → Liquid
- Bottom-left box → Wood (fuel) → Solid
- Top-right box → Smoke or air above → Gas
- Middle-right box → Lake → Liquid
- Bottom-right box → Fire (flame) → Gas

So we fill in:
- Top-left: Gas
- Middle-left: Liquid
- Bottom-left: Solid
- Top-right: Gas
- Middle-right: Liquid
- Bottom-right: Gas

✔ Final Answer:
- Left column (top to bottom): Gas, Liquid, Solid
- Right column (top to bottom): Gas, Liquid, Gas

(Though some might be repeated — gases are common in fire and steam.)

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Question 6:

> Complete the diagram below.

We have a cycle showing changes between Solid, Liquid, and Gas.

Given:
- Melting: Solid → Liquid
- Condensation: Gas → Liquid
- Freezing: Liquid → Solid

And:
- Boiling: Liquid → Gas
- Sublimation: Solid → Gas (direct)
- Reverse of sublimation: Deposition (Gas → Solid)

Now fill in the blanks:

(a): From Solid → Liquid → This is Melting

(b): From Liquid → Solid → This is Freezing

(c): From Gas → Liquid → This is Condensation

✔ So:
- (a) = Melting
- (b) = Freezing
- (c) = Condensation

Also note:
- The curved arrow from Solid → Gas is Sublimation
- The reverse (Gas → Solid) is Deposition, which is not labeled here.

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✔ Final Answers:

#### Question 4:
| Object | State of Matter |
|--------|-----------------|
| First (tight grid) | Solid |
| Second (close, moving) | Liquid |
| Third (spread out) | Gas |

#### Question 5:
Label the boxes (left to right, top to bottom):
- Left side (from top): Gas, Liquid, Solid
- Right side (from top): Gas, Liquid, Gas

Or more precisely:
- Arrow pointing to steam → Gas
- Arrow pointing to water in pot → Liquid
- Arrow pointing to wood → Solid
- Arrow pointing to air/smoke → Gas
- Arrow pointing to lake → Liquid
- Arrow pointing to flame → Gas

So labels:
- Top-left: Gas
- Middle-left: Liquid
- Bottom-left: Solid
- Top-right: Gas
- Middle-right: Liquid
- Bottom-right: Gas

#### Question 6:
- (a) = Melting
- (b) = Freezing
- (c) = Condensation

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