Matter Changing States Worksheet - Free Printable

Problem: Completing Sentences About Matter Changing State

The task involves completing sentences using the provided words from the word bank. Here is the solution with explanations for each sentence:

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#### Word Bank:
- Boiling
- Boiling Point
- Condensation
- Evaporation
- Freezing
- Melting Point
- Sublimation
- Deposition

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Sentences to Complete:

1. The type of vaporization that takes place below the surface of a liquid is called _________.
- Answer: Evaporation
- Explanation: Evaporation occurs when particles at the surface of a liquid gain enough energy to escape into the gas phase, even below the boiling point.

2. Liquids boil at a specific temperature called the _________.
- Answer: Boiling Point
- Explanation: The boiling point is the temperature at which a liquid turns into a gas throughout its volume (not just at the surface).

3. The melting point of a substance is also the same as the _________.
- Answer: Freezing Point
- Explanation: The melting point and freezing point are the same temperature for a given substance. Melting is the transition from solid to liquid, and freezing is the reverse process.

4. _________ is a type of vaporization that takes place on the surface of the liquid.
- Answer: Evaporation
- Explanation: Evaporation specifically refers to the process where particles at the surface of a liquid escape into the gas phase.

5. When matter changes from a solid to a liquid, the process is called _________.
- Answer: Melting
- Explanation: Melting is the process by which a solid gains energy and transforms into a liquid.

6. The reverse of melting is called _________, when a liquid becomes a solid.
- Answer: Freezing
- Explanation: Freezing is the opposite of melting, where a liquid loses energy and transforms into a solid.

7. In _________, particles change directly from a solid to a gas.
- Answer: Sublimation
- Explanation: Sublimation is the process where a solid transitions directly into a gas without becoming a liquid first.

8. Crystalline solids melt at a specific temperature called the _________.
- Answer: Melting Point
- Explanation: Crystalline solids have a well-defined melting point, which is the temperature at which they begin to transform from a solid to a liquid.

9. _________ occurs when a liquid gets enough energy to become a gas.
- Answer: Boiling
- Explanation: Boiling is the process where a liquid turns into a gas throughout its volume, typically at the boiling point.

10. The opposite of vaporization is called _________.
- Answer: Condensation
- Explanation: Condensation is the process where a gas loses energy and transforms back into a liquid.

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Final Answers:

1. Evaporation
2. Boiling Point
3. Freezing Point
4. Evaporation
5. Melting
6. Freezing
7. Sublimation
8. Melting Point
9. Boiling
10. Condensation

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Boxed Final Answer:

\[
\boxed{
\text{1. Evaporation, 2. Boiling Point, 3. Freezing Point, 4. Evaporation, 5. Melting, 6. Freezing, 7. Sublimation, 8. Melting Point, 9. Boiling, 10. Condensation}
}
\]