States of Matter
This state of matter has has no visible shape and fills its container.
What is a gas?
Transferring energy out of a substance makes the molecules move ________.
What is slower?
Do the molecules in a gas have more or less kinetic energy than the molecules in a liquid?
What is more?
This type of force is what keeps molecules so close together!
What are intermolecular forces!
This occurs when molecules that make up a substance experience a change to their freedom of movement and a the substance changes states of matter.
What is a phase change?
You can increase the kinetic energy of the particles in a substance by doing this to it.
What is Heating?
The energy that an object has because it is moving.
The molecules of this type of substance are not attracted to each other at all.
What is a gas?
What is the phase change when a liquid turns into a gas?
This phase of matter holds its shape and does not take the shape of its container.
This is the energy of MOTION.
What is Kinetic Energy?
This is a measure of the average kinetic energy of the molecules of a substance.
What is temperature?
True or false: Solid particles are not attracted to each other at all.
What is false
This is the type of phase change that occurs when a gas turns into a solid.
How do the molecules of a liquid move?
What is they slide past each other?
Think of the simulation we did in class where we watched particles in a gas, and took data on their temperature and kinetic energy.
How did the molecules change speed and transfer energy from one particle to another?
What are collisions?
This PHASE CHANGE occurs when the kinetic energy of a liquid decreases enough so that the attraction between molecules becomes much stronger and pulls molecules closer together.
What is freezing?
This is the phase change when a solid turns into a gas.
This state of matter has the strongest intermolecular forces.
What is a solid?
Why does a balloon filled with air expand when it is heated?
What is the particles move faster and get farther apart?
The more kinetic energy a substance, the greater the ______________________ the molecules have.
What is movement?
What is temperature?
If substance A evaporates before substance B substance A must have _____ molecular attraction?
What is less molecular attraction?
What is weaker molecular attraction?
Which phase change requires the most energy input: melting, boiling, or sublimation?
What is sublimation!
(it requires fully overcoming intermolecular forces from solid directly to gas.)