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Chemistry Ch. 3

QuestionAnswer
Matter is made up of _____ and _________. atoms;molecules
Particles do not move fast enough to overcome the attraction between them. solid
Particles move independently of each other. gas
Particles are close together but can slide past one another. liquid
Particles are close together and vibrate in place. solid
Particles move fast enough to overcome nearly all of the attraction between them. gas
What are ice, water, and steam examples of? states of matter
What stays the same in solids? shape and volume
What are two examples of solids? crystalline and amorphous
Which statement is true of liquids? fixed volume but not shape
What force acts on particles at the surface of a liquid? surface tension
The property of liquids that describes their ability to flow is called _________. viscosity
The state of matter that has no fixed shape or volume is ___. gas
What is true of the particles of a gas? move fast
A measure of how fast the particles in an object are moving is ___________. temperature
The amount of space an object takes up is the ______. volume
The volume of a gas depends upon the size of the _________. container
The amount of force exerted on a given area is called ________. pressure
The relationship between the volume and pressure of a gas is called ___________. Boyle's Law
The relationship between the volume and temperature of a gas when pressure remains constant is know as _____________. Charles's Law
Helium is a ___. gas
A measure of the speed of molecules is the ___________. temperature
The amount of space matter takes up is its ______. volume
When the amount of force per unit area increases, the ________ increases. pressure
The pressure in a ball can be increased by adding more _________. particles
The relationships between temperature, pressure, and volume are described by _________________ that involve a fixed amount of gas. gas behavior laws
Volume and pressure of a gas are inversely related. The temperature must stay constant. This is ___________. Boyle's Law
Volume and temperature of a gas are directly related. The pressure must stay constant. This is _____________. Charles's Law
Which has the most energy? particles in steam
When a substance changes from one physical form to another, we say the substance has had a(n) _______________. change of state
The temperature at which a substance changes from solid to liquid is the _____________ of the substance. melting point
Melting is considered a(n) ___________ change because energy is gained by the substance as it changes state. endothermic
A substance's ______________ is the temperature at which it changes from a liquid to a solid. freezing point
What happens if energy is added or removed from a glass of water? energy added->boils->gas energy removed->freezes->solid
Freezing is considered a(n) __________ change because energy is removed from the substance. exothermic
The change of a substance from a liquid to a gas. evaporation
The change of state from a liquid to a gas when the vapor pressure equals the atmospheric pressure. boiling
The pressure inside the bubbles of a boiling liquid. vapor pressure
The temperature at which a liquid boils. boiling point
As you go higher above sea level, the ___________________ decreases and the _____________ of a substance gets lower. atmospheric pressure;boiling point
The change of state from a gas to a liquid is ____________. condensation
At a given pressure, the condensation point for a substance is the same as its _____________. boiling point
For a substance to change from a gas to a liquid, particles must ______________. clump together
The change of state from a solid to a gas is called ___________. sublimation
The speed of the particles in a substance changes when the ___________ changes. temperature
The temperature of a substance does not change before the _______________ is complete. change of state
When energy is gained by something during a change of state, a(n) ___________ change occurs. endothermic
The melting point of a substance is the same as its ________ point. freezing
When energy is removed from a substance, a(n) _________ change may occur. exothermic
The particles break away from each other during ___________. evaporation
When water boils, a(n) _______________ occurs. change of state
Dry ice changes from a solid to a gas during ___________. sublimation
Sublimation is a(n) ___________ change. endothermic
When the ___________ of a substance changes, the speed of the particles also changes. temperature
List the steps of the water cycle. freezing->melting->evaporation->condensation
Created by: itslizzie143