SC1- States of matter

• What are the 3 states of matter?

  Solid, liquid, gas
• What are the forces of attraction like in a solid?

  Strong
• What are the forces of attraction in a liquid?

  Weak
• What are the forces of attraction in a gas?

  Very weak
• What is the pattern in a solid?

  Particles are close together in a regular pattern
• What is the pattern in a liquid?

  Particles are close but in a random order
• What is the pattern in the gas?

  Particles are far apart in a random order
• What is the movement of solids?

  Vibrate about fixed position
• What is the movement of liquid?

  Particles move around each other
• What is the movement of gases?

  Fast in all directions
• What is the relative energy of solids?

  Least stored energy in particles
• What is the relative energy of gases?

  Most stored energy in particles
• What is the volume of solids?

  Definite shape and volume
• What is the volume of liquids?

  Definite volume but shape can change for the container
• What is the volume of gases?

  Dont keep a definite shape or volume, but always fill a container
• What is the process of a solid going to a gas?

  Sublimation
• What is the process of a gas to a solid?

  Desublimation
• What is particle theory?

  Considering each particle as a small, solid, inelastic sphere
• Problems with particle model

  -Particles arent solid, inelastic, or spheres

  -model doesnt include details of forces between particles (how strong they are or how many bonds)
• When particles get more energy they can expand if the container is expandable. Or if the container is fixed, the pressure will increase
• Gas —> Liquid

  Gas wont have enough energy to overcome forces of attraction, so bonds will start to form
• Liquid —> Solid

  Liquid wont have enough energy to overcome forces of attraction and even more bonds form, fixing particles in place