P1.1 The Particle Model

• What does the Particle Model describe about the structure of matter?

  Tiny, discrete particles
• What type of motion do particles in the Particle Model exhibit?

  Constant random motion
• Order the states of matter from most to least compressible based on the Particle Model.

  1️⃣ Gas

  2️⃣ Liquid

  3️⃣ Solid
• How do particles move in a liquid according to the Particle Model?

  Slide past each other
• What is the particle arrangement in a gas according to the Particle Model?

  Far apart and randomly distributed
• Order the states of matter based on the strength of particle interactions from strongest to weakest.

  1️⃣ Solid

  2️⃣ Liquid

  3️⃣ Gas
• There are no spaces between the particles in matter according to the Particle Model.

  False
• What is the particle arrangement in a solid according to the Particle Model?

  Regular pattern
• What is the compressibility of a solid according to the Particle Model?

  Incompressible
• Matter is composed of tiny, discrete particles in the Particle Model.

  True
• In the Particle Model, particles can attract or repel each other.


  True
• Gases expand to fill the container
• Weak attractive forces exist between particles in gases according to the Particle Model.


  True
• Particles in a solid can only vibrate in fixed positions according to the Particle Model.

  True
• What does the Particle Model describe about the structure of matter?

  Tiny, discrete particles
• What type of motion do particles exhibit in the Particle Model?

  Constant random motion
• Particles in a liquid can slide past each other.


  True
• Matter is made up of continuous waves according to the Particle Model.

  False
• Order the states of matter based on increasing particle motion:

  1️⃣ Solid

  2️⃣ Liquid

  3️⃣ Gas
• Particles in a liquid move more freely than in a gas.

  False
• In the Particle Model, there are spaces between the particles
• Match the state of matter with its correct property:

  Solid ↔️ Incompressible

  Liquid ↔️ Slightly compressible

  Gas ↔️ Highly compressible
• Match the state of matter with its particle arrangement:

  Solid ↔️ Closely packed in a regular pattern

  Liquid ↔️ Close together but not in a regular pattern

  Gas ↔️ Far apart and randomly distributed
• What leads to the distinct properties of solids, liquids, and gases?

  Particle differences
• What happens to the particles in a liquid when more energy is added?

  Boils into a gas
• Match the physical property with the state of matter that exhibits it:

  Fixed volume ↔️ Solid

  Takes the shape of the container ↔️ Liquid

  Highly compressible ↔️ Gas
• When energy is removed from a gas, it condenses into a liquid.


  True
• What type of attractive forces exist between particles in a liquid?

  Moderate
• What is the particle arrangement in a solid according to the Particle Model?

  Closely packed in a regular pattern
• The differences between the three states of matter arise from particle arrangement, motion, and interactions
• Match the state of matter with its corresponding particle motion:

  Solid ↔️ Particles vibrate in fixed positions

  Liquid ↔️ Particles can slide past each other

  Gas ↔️ Particles move rapidly in all directions
• Matter is composed of tiny, discrete particles
• Particles in matter can attract or repel
• The attractive forces between particles in a gas are weak
• The particles in matter are in constant random motion
• The volume of a gas expands to fill the container
• When a solid is heated, it gains kinetic energy and melts
• In a solid, particles are closely packed and vibrate in fixed positions