To solve the problem, we need to understand the processes of changing states of matter for water. The key terms provided in the image are:
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Evaporates: Water turns into water vapor (gas) when heated.
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Condenses: Water vapor turns back into liquid water when cooled.
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Melts: Ice (solid) turns into liquid water when heated.
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Freezes: Liquid water turns into ice (solid) when cooled.
Let's fill in the sentences step by step using these concepts:
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Sentence 1:
If you ________ water to a temperature of ______, it ________ to form water vapour.
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Action: To turn water into water vapor, you need to heat it.
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Temperature: Water evaporates at temperatures above 100°C (boiling point).
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Process: Evaporates
So, the completed sentence is:
If you heat water to a temperature of 100°C, it evaporates to form water vapour.
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Sentence 2:
If you ________ water vapour to a temperature of ______, it ________ to form water.
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Action: To turn water vapor back into liquid water, you need to cool it.
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Temperature: Water vapor condenses at temperatures below 100°C.
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Process: Condenses
So, the completed sentence is:
If you cool water vapour to a temperature of below 100°C, it condenses to form water.
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Sentence 3:
If you ________ ice to a temperature of ______, it ________ to form water.
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Action: To turn ice into liquid water, you need to heat it.
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Temperature: Ice melts at 0°C.
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Process: Melts
So, the completed sentence is:
If you heat ice to a temperature of 0°C, it melts to form water.
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Sentence 4:
If you ________ water to a temperature of ______, it ________ to form ice.
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Action: To turn liquid water into ice, you need to cool it.
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Temperature: Water freezes at 0°C.
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Process: Freezes
So, the completed sentence is:
If you cool water to a temperature of 0°C, it freezes to form ice.
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Final Answer:
1. If you
heat water to a temperature of
100°C, it
evaporates to form water vapour.
2. If you
cool water vapour to a temperature of
below 100°C, it
condenses to form water.
3. If you
heat ice to a temperature of
0°C, it
melts to form water.
4. If you
cool water to a temperature of
0°C, it
freezes to form ice.
Boxed Final Answer:
\[
\boxed{
\text{1. heat, 100°C, evaporates} \\
\text{2. cool, below 100°C, condenses} \\
\text{3. heat, 0°C, melts} \\
\text{4. cool, 0°C, freezes}
}
\]
Parent Tip: Review the logic above to help your child master the concept of changing states of matter worksheet.
