3.2.1 States of Matter

• What does the particle model of matter describe?

  All matter is made of particles
• In solids, particles vibrate in place within a fixed lattice structure.


  True
• Arrange the states of matter in order of increasing particle spacing.

  1️⃣ Solid

  2️⃣ Liquid

  3️⃣ Gas
• Match the state of matter with its particle arrangement.

  Solid ↔️ Tightly packed in a fixed lattice

  Liquid ↔️ Closely packed but can move around

  Gas ↔️ Widely spaced and randomly arranged
• What is the key difference between solids, liquids, and gases in terms of particle arrangement?

  Particle arrangement varies
• What type of attractive forces exist between particles in gases?

  Weak attractive forces
• What is an example of a solid mentioned in the study material?

  Ice
• What is an example of a gas mentioned in the study material?

  Steam
• In liquids, particles can move freely past each other, allowing the liquid to conform to its container
• In solids, particles are packed together tightly
• Gases have particles that move freely and spread out due to minimal attractive forces
• In solids, particles are arranged in a fixed lattice
• Match the state of matter with its description:

  Solid ↔️ Rigid arrangement, strong forces

  Liquid ↔️ Closely packed, moderate forces

  Gas ↔️ Widely spaced, minimal forces
• The attractive forces between particles in a solid are strong.

  True
• What allows liquids to flow and conform to the shape of their container?

  Freedom of particle movement
• The attractive forces between gas particles are weak.


  True
• The state of matter depends on the arrangement, movement, and forces
• In solids, particles can only vibrate
• What is the arrangement of particles in liquids?

  Closely packed, but mobile
• Liquid particles can move freely past each other.


  True
• The attractive forces between gas particles are weak
• Order the states of matter based on the strength of attractive forces between particles, from strongest to weakest.

  1️⃣ Solid

  2️⃣ Liquid

  3️⃣ Gas
• In solids, the particles are rigidly held in place with strong attractive forces, allowing only vibrations
• The state of matter depends on the arrangement, movement, and forces between particles
• What type of forces exist between particles in liquids?

  Moderate attractive forces
• In gases, particles move freely and spread out due to minimal attractive forces
• Particles in liquids maintain a fixed volume but can change shape.


  True
• In solids, particles are rigidly arranged and can only vibrate due to strong attractive forces
• The state of matter depends on the arrangement, movement, and forces between particles.


  True
• In liquids, particles move freely but stay close
• In solids, particles are tightly packed in a fixed lattice structure.


  True
• What type of movement do particles in solids exhibit?

  Vibrate in place
• In liquids, particles can move past each other while staying relatively close.


  True
• What are the three common states of matter?

  Solid, liquid, gas
• In gases, particles are widely spaced and randomly arranged.

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

  Moderate
• In solids, particles are tightly packed and can only vibrate in place
• In gases, particles move rapidly in all directions
• What does the particle model of matter explain?

  All matter is made of particles
• What is the arrangement of particles in solids?

  Tightly packed in a lattice