Share 7th grade Energy & States of Matter
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Why do solids maintain a fixed shape?
Their particles move freely
Their particles can slide past each other
Their particles are tightly packed in a fixed, regular pattern
According to the Particle Theory, what determines the state of matter?
Particle arrangement and energy
Weight
Color
In liquids, particles can:
Stay completely still
Slide past each other
Remain in a rigid structure
Brownian Motion demonstrates:
Particles are always moving randomly
Particles are stationary
Particles are perfectly organized
Which state of matter can be compressed most easily?
Liquids
Gases
Solids
When particles vibrate in place but cannot move freely, this describes:
Solid state
Liquid state
Gaseous state
Liquids have which unique characteristics?
No fixed shape and no fixed volume
Fixed shape and fixed volume
No fixed shape but fixed volume
What causes the random movement of tiny particles in Brownian Motion?
Magnetic fields
Collisions with other molecules
Gravity
In gases, particles:
Are tightly packed
Remain in a fixed position
Are far apart and move quickly
The arrangement of particles most directly influences:
The weight of matter
The color of matter
The state of matter
Which statement best describes why water can flow?
Its particles can slide past each other
Its particles are completely stationary
Its particles are tightly packed
Robert Brown's observations were significant because they:
Created a new scientific instrument
Measured particle speed
Proved matter is made of moving particles
What happens to gas particles when compressed?
They can be pushed closer together
They become liquids
They disappear
A balloon expanding when you blow air into it demonstrates:
Solid state properties
Gas state properties
Liquid state properties
Particles in a solid:
Vibrate in a fixed position
Are randomly distributed
Move freely
Which factor most influences particle movement?
Energy level
Particle size
Container shape
