What happens when matter changes state?
How do solids and liquids change states?
How do liquids and gases change state?
How do solids and gases change state?
What happens to matter when a change of state occurs?
100
The 3 most familiar states of matter are:
What is solid, liquid, and gas
100
Particles in a liquid move_____________ and particles in a solid move ________________.
What is -liquid: can slide past each other -solid: vibrate
100
Particles in a _____ have a great deal of energy.
What is gas
100
Under the right conditions, some solids and gases can change state without ever becoming a liquid. The substance must gain or lose a great deal of ________ in order for this to happen.
What is energy.
100
When matter changes from one state of matter to another, it remains the same kind of __________.
What is matter.
200
To change a substance from one state of matter to another, ______ must be added or removed.
What is energy.
200
____________ energy from a liquid can cause it to change to a solid as the particles stop sliding past each other.
What is removing or taking away
200
_________ energy from a gas causes a gas to change into a liquid. ___________ enough energy to a liquid causes it to change into a gas.
What is removing and adding
200
The change from a solid state directly into a gas is called ________________.
What is sublimation.
200
A change of state is an example of a _________ change. Its ________ identity does not change.
What is physical, chemical
300
All matter is made of tiny particles that are in constant motion. During a change of state, the motion of the particles _____________.
What is changes.
300
____________ energy to a _________ can cause it to change to a liquid as particles begin sliding past each other.
What is adding energy to a solid
300
As liquid is warmed, its particles gain energy. Some particles gain enough energy that they escape from the surface of the liquid and become a gas. This process is called ___________.
What is evaporation.
300
__________ is the change in state from a gas directly into a solid.
What is deposition
300
What happens to the amount of matter in a change of state?
The mass of a substance does not change when its state changes. Each state contains the same amount of matter.
400
During a change of state, a substance must gain energy from the environment or lose energy to the environment, but the total amount of energy is ____________.
What is conserved (or stays the same).
400
The change in state in which a liquid becomes a solid is called ______________. The temperature at which a liquid substance changes into a solid is the liquid's ______________ _____________.
What is freezing and freezing point.
400
A rapid change from a liquid to a gas, or vapor, is called ___________. This change takes place throughout the liquid, not just the surface. As a liquid is warmed to a high enough temperature, bubbles form. The pressure inside the bubbles is equal to the air pressure surrounding the liquid, so the bubbles rise to the surface.
What is boiling.
400
An example of when a gas changes directly to a solid is _________________.
What is ice crystals form on a window when water vapor in the air is converted to ice.
400
Give an example that shows that mass is conserved when a change of state happens.
100 g of liquid water freezes to 100 g of ice.
500
When a substance gains or loses energy, its _______________________ or it _____________________.
What is temperature changes or it changes state.
500
The change of state from a solid to a liquid is called _____________. The temperature at which the substance changes from a solid to a liquid is called the ___________ __________________.
What is melting and melting point.
500
Particles is a gas have very little attraction to one another. As a gas is cooled its particles lose energy. The attraction between particles overcomes the speed of their motion, and a liquid forms. This change of state from a gas to a liquid is called ___________. An example of this _________________________.
What is condensation. Answers can vary, but morning dew or droplets on a glass on a summer day are examples.
500
The opposite of deposition is 1) ____________. The opposite of evaporation is 2)___________. The opposite of melting is 3) ______________.
What is 1) sublimation 2) condensation 3) freezing
500
What 3 things change as a result of a change of state? Hint: think about the particles
The energy of the particles, the movement of the particles, and the distance between the particles.
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