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7th grade Energy & States of Matter
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Energy can be created from nothing.
 
False
 
True
Gases have more energy than solids.
 
True
 
False
All matter is made up of tiny particles.
 
True
 
False
Solids take the shape of their container.
 
False
 
True
Heat is a form of energy.
 
True
 
False
What tool would you use to measure the temperature of a substance?
 
Thermometer
 
Ruler
 
Scale
Which type of energy is involved when an object is lifted upward?
 
Gravitational potential energy
 
Thermal energy
 
Sound energy
Why do gases fill the entire container they’re in?
 
Their particles move fast and spread out
 
They have no particles
 
They are heavier than liquids
Freezing occurs when:
 
A liquid loses energy and becomes a solid
 
A gas changes into a liquid
 
A solid gains heat and melts
Why does a solid melt into a liquid when heated?
 
Particles gain energy and move more freely
 
Particles lose energy and freeze
 
The particles become smaller
As temperature increases, the movement of particles will:
 
Increase
 
Stay the same
 
Stop
Which of these best describes a gas?
 
No fixed shape and no fixed volume
 
Fixed shape and fixed volume
 
Fixed volume but no fixed shape
What is the name of the process when gas changes into a liquid?
 
Condensation
 
Melting
 
Freezing
What do we call the process of a solid changing directly into a gas?
 
Sublimation
 
Evaporation
 
Condensation
Which state of matter has a definite volume but no definite shape?
 
Liquid
 
Gas
 
Solid
Light energy cannot travel through space.
 
False
 
True
Light energy is the only type of energy visible to human eyes.
 
True
 
False
Thermal energy cannot be measured by any means.
 
False
 
True
Thermal energy depends on how particles move within a substance.
 
True
 
False
Chemical potential energy is found only in electrical circuits.
 
False
 
True
Chemical potential energy is related to the breaking or rearranging of chemical bonds.
 
True
 
False
The formula PE = h Ă· (m Ă— g) is used to calculate gravitational potential energy.
 
False
 
True
The formula for gravitational potential energy is PE = m Ă— g Ă— h.
 
True
 
False
Potential energy is a form of energy that is always moving.
 
False
 
True
Potential energy is energy stored due to an object's position or condition.
 
True
 
False
Which state of matter will ALWAYS take the shape of its container?
 
Gas
 
Solid
 
Liquid
Brownian Motion provides evidence of:
 
Constant particle movement
 
Particle immobility
 
Particle uniformity
Particles in liquids have what unique characteristic?
 
No fixed pattern
 
Fixed position
 
Absolute stillness
The term "incompressible" most directly relates to:
 
Liquids
 
Gases
 
Plasma
Which factor most influences particle movement?
 
Energy level
 
Particle size
 
Container shape
Particles in a solid:
 
Vibrate in a fixed position
 
Move freely
 
Are randomly distributed
A balloon expanding when you blow air into it demonstrates:
 
Gas state properties
 
Solid state properties
 
Liquid state properties
What happens to gas particles when compressed?
 
They can be pushed closer together
 
They disappear
 
They become liquids
Robert Brown's observations were significant because they:
 
Proved matter is made of moving particles
 
Measured particle speed
 
Created a new scientific instrument
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
The arrangement of particles most directly influences:
 
The state of matter
 
The color of matter
 
The weight of matter
In gases, particles:
 
Are far apart and move quickly
 
Are tightly packed
 
Remain in a fixed position
What causes the random movement of tiny particles in Brownian Motion?
 
Collisions with other molecules
 
Gravity
 
Magnetic fields
Liquids have which unique characteristics?
 
No fixed shape but fixed volume
 
Fixed shape and fixed volume
 
No fixed shape and no fixed volume
When particles vibrate in place but cannot move freely, this describes:
 
Solid state
 
Liquid state
 
Gaseous state
Which state of matter can be compressed most easily?
 
Gases
 
Solids
 
Liquids
Brownian Motion demonstrates:
 
Particles are always moving randomly
 
Particles are stationary
 
Particles are perfectly organized
In liquids, particles can:
 
Slide past each other
 
Stay completely still
 
Remain in a rigid structure
According to the Particle Theory, what determines the state of matter?
 
Particle arrangement and energy
 
Color
 
Weight
Why do solids maintain a fixed shape?
 
Their particles are tightly packed in a fixed, regular pattern
 
Their particles move freely
 
Their particles can slide past each other
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