Show:
Matter
Phases
Difficult
Phase Changes
Whatever
100
Materials can be classified as what three things?
What is solid, liquid, and gas.
100
Liquids have a ________________ shape and ________________ volume
What is indefinite, definite.
100
What are the three scales of temperature?
What is fahrenheit, celcius, kelvin
100
Is melting exothermic or endothermic and explain why using molecular motion.
What is endothermic
100
Particles in a gas are never at __________
What is rest
200
Solids have a definite ____________ and a definite _____________.
What is shape and volume
200
Gases have a ______________ shape and a ______________ volume.
What is indefinite, indefinite
200
What is a phase change?
What is reversible physical change from one state to another.
200
Is freezing exothermic or endothermic and explain why using molecular motion.
What is exothermic.
200
Particles in a gas interact _________________.
What is weakly.
300
Objects are in a certain phase based on . . .
What is how fast their molecules are moving
300
What do intermolecular forces do?
What is restrict atomic motion and keep atoms in fixed locations.
300
What are four common phase changes?
What is I will decide!
300
Is evaporating exothermic or endothermic and explain why using molecular motion.
What is endothermic.
300
Is sublimation exothermic or endothermic and explain why using molecular motion.
What is endothermic.
400
How do molecules with lots of kinetic energy move?
What is very fast
400
Particles in a gas can collide with container walls or with each other causing one atom to ____________________ and one atom to ___________________.
What is slow down, speed up.
400
What happens to energy and molecular movement during an endothermic change?
What is the system absorbs energy from its surroundings and molecules more faster.
400
Is condensation exothermic or endothermic and explain why using molecular motion.
What is exothermic
400
What is deposition
What is gas to solid skipping liquid
500
What phase has the most intermolecular forces? Which has the least?
What is solid and gas
500
Most matter on Earth is solid, liquid, or gas. Most matter in the universe is ______________________.
What is Plasma
500
What happens to energy and molecular movement during an exothermic change.
What is energy is released, molecules slow down.
500
What is sublimation?
What is solid to gas without stopping in the liquid phase
500
Is deposition exothermic or endothermic and explain why using molecular motion.
What is exothermic