States Of Matter And Changing State Flashcards
(22 cards)
How are particles arranged in a solid?
Closely packed in a fixed, regular pattern with very little movement.
How are particles arranged in a liquid?
Close together but not in a fixed pattern; they can move past each other.
How are particles arranged in a gas?
Far apart and randomly arranged, moving freely in all directions.
Which state of matter has the most energy?
Gas.
Which state of matter has a fixed shape and volume?
Solid.
Which state of matter takes the shape of its container but has a fixed volume?
Liquid.
Which state of matter has no fixed shape or volume?
Gas.
What happens to particle movement as temperature increases?
Particles move faster as they gain kinetic energy.
What is the process of changing from a solid to a liquid?
Melting.
What is the process of changing from a liquid to a solid?
Freezing.
What is the process of changing from a liquid to a gas?
Boiling or evaporation.
What is the process of changing from a gas to a liquid?
Condensation.
What is the process of changing directly from a solid to a gas?
Sublimation.
What happens to the energy of particles when a substance changes state from solid to liquid?
Particles gain energy and move more freely.
Is a change of state a physical or chemical change?
Physical change.
Why do substances have different melting and boiling points?
Because of differences in the strength of forces between particles.
What happens to temperature during a change of state?
It remains constant while the change occurs.
What are the forces between particles in solids, liquids, and gases called?
Intermolecular forces.
Why can gases be compressed easily?
Because the particles are far apart and have space to move closer together.
Why do solids not flow?
Because the particles are fixed in place and can only vibrate.
Why do liquids flow but not compress easily?
Particles can move past each other but are still closely packed.
Why does boiling require more energy than melting?
Because more energy is needed to overcome the forces between liquid particles to become gas.
