Particles
When heat decreases, particles move slower and get ________ together
Closer
The change of state when a solid turns into a liquid
Melting
This measures how fast particles in a substance are moving.
Temperature
This type of energy comes from the movement or vibration of particles and is felt as heat.
Thermal energy
What is the Particle Model of Matter?
This model tells us that all matter is made up of tiny particles that are always moving, and that adding heat makes them move faster
What is evaporation/ vaporization?
The change of state when a liquid turns into a gas because heat is added.
If a swimming pool and a pot of water have the same temperature, which one has more heat?
the swimming pool, because it has more particles = more heat
Sound energy is also known as this type of energy because it involves movement
Kinetic energy
Why does a gas fill an entire container while a solid keeps its shape
Gas particles move much faster and have very large spaces between them, allowing them to spread out and fill the container, while solid particles are tightly packed and only vibrate
Explain why heating a solid can make it melt using the Particle Model
Adding heat makes the solid’s particles move faster and spread farther apart until they can slide past each other like a liquid
Explain why temperature and heat are NOT the same thing
Temperature measures particle speed, while heat is the total energy of all moving particles in a substance
A solar panel turns one form of energy into another. Identify both forms
Light energy into electrical energy