1
Question
Why do particles of matter move?
Open in App
Solution
- In a solid, the atoms are very attracted to one another. The atoms vibrate but stay in fixed positions because of their strong attractions for one another.
- Heating a solid increases the motion of the atoms.
- An increase in the motion of the atoms competes with the attraction between atoms and causes them to move a little further apart.
- Cooling a solid decreases the motion of the atoms.
- A decrease in the motion of the atoms allows the attractions between atoms to bring them a little close together.
Summary Students will see a demonstration with a metal ball and ring showing that heat causes atoms to spread a little further apart. They will also see that cooling a solid causes the atoms to get a little closer together. The same rules they discovered about liquids also apply to solids.
- In a solid, the atoms are very attracted to one another. The atoms vibrate but stay in fixed positions because of their strong attractions for one another.
- Heating a solid increases the motion of the atoms.
- An increase in the motion of the atoms competes with the attraction between atoms and causes them to move a little further apart.
- Cooling a solid decreases the motion of the atoms.
- A decrease in the motion of the atoms allows the attractions between atoms to bring them a little close together.
Students will see a demonstration with a metal ball and ring showing that heat causes atoms to spread a little further apart. They will also see that cooling a solid causes the atoms to get a little closer together. The same rules they discovered about liquids also apply to solids.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
