Let's solve the worksheet step by step.
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Q.1: Label the diagram showing the changing states of matter with the following words:
Words to use:
- freezing
- evaporation
- condensation
- melting
Diagram Description:
We have three main states:
-
Solid (ice cube)
-
Liquid (pool of water)
-
Gas (cloud)
Arrows connect these states, and we need to label each arrow with the correct process.
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#### Step-by-step reasoning:
1.
Solid → Liquid: This is when ice melts into water.
✔ Melting
2.
Liquid → Gas: This is when water turns into vapor (water vapor).
✔ Evaporation
3.
Gas → Liquid: This is when water vapor condenses into liquid water.
✔ Condensation
4.
Liquid → Solid: This is when water freezes into ice.
✔ Freezing
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Now, place the labels on the diagram:
- Arrow from
solid → liquid:
melting
- Arrow from
liquid → gas:
evaporation
- Arrow from
gas → liquid:
condensation
- Arrow from
liquid → solid:
freezing
> Note: The diagram likely has arrows in both directions between each pair of states. So you’ll need to label each arrow accordingly.
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Final Labels for Diagram:
- From
solid → liquid:
melting
- From
liquid → solid:
freezing
- From
liquid → gas:
evaporation
- From
gas → liquid:
condensation
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Q.2: Write T for True or F for False
Let’s evaluate each statement:
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1. The temperature at which a solid melts is called its freezing point.
✘ False
→ The temperature at which a solid melts is called the
melting point.
The
freezing point is the temperature at which a liquid turns into a solid.
For water, melting point = freezing point = 0°C, but they are not the same *term*.
✔ Answer: F
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2. Changes in state are reversible and can be made by adding or removing heat.
✔ True
→ Yes, phase changes are reversible (e.g., water → ice → water again).
They require energy input (adding heat) or removal (removing heat).
✔ Answer: T
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3. The melting and freezing points of a material are the same temperature.
✔ True
→ For pure substances like water, melting point and freezing point occur at the same temperature (e.g., 0°C for water).
It's just the reverse process.
✔ Answer: T
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4. At higher temperatures particles in an object move slower.
✘ False
→ At higher temperatures, particles move
faster, not slower.
Temperature is a measure of the average kinetic energy of particles.
✔ Answer: F
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5. Ice, liquid water, and water vapor are three different states of water.
✔ True
→ Yes! These are the solid, liquid, and gas states of water.
✔ Answer: T
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✔ Final Answers:
#### Q.1: Diagram Labels
-
Solid → Liquid: melting
-
Liquid → Solid: freezing
-
Liquid → Gas: evaporation
-
Gas → Liquid: condensation
#### Q.2: True/False
1.
F
2.
T
3.
T
4.
F
5.
T
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Let me know if you'd like this formatted as a completed worksheet!
Parent Tip: Review the logic above to help your child master the concept of states of matter worksheet.
