C1.1: The Particle Model Flashcards
What is the process called when a solid changes into a liquid?
Melting
What is the process called when a liquid turns into a solid?
Freezing
What is the process called when a solid changes into a gas?
Sublimation
What is the process called when a gas turns into a solid?
Deposition
What is the process called when a liquid turns into a gas?
Evapouration
What is the process called when a gas turns into a liquid?
Condensation
How are the particles arranged in a solid?
Regular arrangement
What is the distance between the particles in a solid?
Very close
How do solids move and compress?
Cannot compress because they have a fixed shape and cannot flow
Vibrate about fixed positions
How is the arrangement in a liquid like?
Random arrangement
What is the distance between the particles like in a liquid?
Close
How do particles in a liquid move?
Move around each other
How is the particle arrangement in a gas like?
Random
What is the distance between the particles in a gas?
Far apart
How do gas particles move?
Move quickly in all directions
What is a physical change?
When a substance changes state or shape but no new susbtances are formed
REVERSIBLE
What are 3 examples of physical changes?
- mixing sand and water
- melting an ice cube
- boiling water
What is a chemical change?
When a change produces one or more new substances.
Properties are different from the original
NON-REVERSIBLE
What are 3 examples of chemical changes?
- boiling an egg
- baking a cake
- steel rusting
How do the particles change into a physical change?
Arrangement and movement change
Particles themselves stay the same
How do the particles change into a chemical change?
Breaks bonds and forms new bonds
Atoms rearrange
What are 3 limitations to the particle model?
Does not account:
- forces between particles
- size of particles
- space between particles
