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Molecular Movement and Temperature
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Molecular Movement and Temperature
🌡️ Part 1: Understanding Temperature and Molecules
1. What happens to molecules when they get warmer?
They move slower
They move faster
They stop moving
They disappear
2. When water is cold (5°C), how do the water molecules move?
Very fast and spread out
Slowly and close together
They don't move at all
In straight lines only
3. Which temperature would make molecules move the fastest?
0°C (freezing)
20°C (room temperature)
50°C (hot water)
-10°C (very cold)
4. Fill in the blank: When molecules are heated up, they have more _________ to move around.
Answer: _______________
✏️ Part 2: Drawing Molecular Movement
5. Draw how molecules move in COLD water (5°C). Use dots for molecules and arrows to show movement.
Instructions: Draw at least 8 molecules. Show how close together they are and how they move.
6. Draw how molecules move in HOT water (80°C). Use dots for molecules and arrows to show movement.
Instructions: Draw at least 8 molecules. Show how spread out they are and how they move.
7. Explain the difference between your two drawings above. How is the molecular movement different in hot and cold water?
🔬 Part 3: Real World Connections
8. Think about a hot cup of tea cooling down. Describe what happens to the molecules as the tea gets cooler.
9. Why do you think ice cubes melt faster in warm water than in cold water? Use what you know about molecular movement to explain.
10. Circle the situations where molecules would be moving FAST:
Steam from boiling water
Ice cubes in the freezer
Hot soup
Cold milk from the fridge
Warm air on a sunny day
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