Changing States of Matter - Worksheet | Printable and Distance ... - Free Printable

Problem Analysis:

The task involves two parts:
1. Labeling a diagram showing the changing states of matter using the provided terms: freezing, condensation, evaporation, and melting.
2. Answering true/false questions about the properties and changes of states of matter.

Let's solve each part step by step.

---

Part 1: Labeling the Diagram

#### Diagram Description:
The diagram shows three states of matter:
- Solid (ice cube)
- Liquid (water)
- Gas (water vapor)

Arrows indicate the transitions between these states. The labels for these transitions need to be filled in using the given terms: freezing, condensation, evaporation, and melting.

#### Solution:
1. From Solid to Liquid: This is the process where ice melts into water. The correct term is melting.
2. From Liquid to Gas: This is the process where water turns into water vapor. The correct term is evaporation.
3. From Gas to Liquid: This is the process where water vapor turns back into liquid water. The correct term is condensation.
4. From Liquid to Solid: This is the process where water freezes into ice. The correct term is freezing.

#### Final Labels:
- Arrow from solid (ice) to liquid (water): melting
- Arrow from liquid (water) to gas (water vapor): evaporation
- Arrow from gas (water vapor) to liquid (water): condensation
- Arrow from liquid (water) to solid (ice): freezing

The labeled diagram should look like this:
```
gas
|
v
solid <-- freezing --> liquid
^ ^
| |
melting evaporation
| |
v v
liquid <--- condensation --- gas
```

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Part 2: True/False Questions

#### Question 1:
> The temperature at which a solid melts is called its freezing point.

- Explanation: The temperature at which a solid melts is called its melting point, not its freezing point. The freezing point is the temperature at which a liquid turns into a solid.
- Answer: False (F)

#### Question 2:
> Changes in state are reversible and can be made by adding or removing heat.

- Explanation: Phase changes (e.g., melting, freezing, evaporation, condensation) are indeed reversible processes. Adding heat causes a substance to change from a solid to a liquid to a gas, while removing heat causes it to change from a gas to a liquid to a solid.
- Answer: True (T)

#### Question 3:
> The melting and freezing points of a material are the same temperature.

- Explanation: For most substances, the melting point (the temperature at which a solid turns into a liquid) and the freezing point (the temperature at which a liquid turns into a solid) are the same. This is because they represent the same transition but in opposite directions.
- Answer: True (T)

#### Question 4:
> At higher temperatures, particles in an object move slower.

- Explanation: At higher temperatures, particles in a substance gain more energy and move faster. Conversely, at lower temperatures, particles move slower.
- Answer: False (F)

#### Question 5:
> Ice, liquid water, and water vapor are three different states of water.

- Explanation: Ice is the solid state of water, liquid water is the liquid state, and water vapor is the gaseous state. These are indeed three different states of the same substance.
- Answer: True (T)

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Final Answers:

#### Part 1: Labeled Diagram
- From solid to liquid: melting
- From liquid to gas: evaporation
- From gas to liquid: condensation
- From liquid to solid: freezing

#### Part 2: True/False Questions
1. F
2. T
3. T
4. F
5. T

---

Final Boxed Answer:

\[
\boxed{
\text{Part 1: } \text{melting, evaporation, condensation, freezing} \\
\text{Part 2: } \text{F, T, T, F, T}
}
\]