Study guide: States of Matter and Their Properties

Course Outline

  1. Physical States of Matter
  2. Properties of Solids
  3. Properties of Liquids
  4. Properties of Gases and Fluids

1. Physical States of Matter

★ Must-know

  • Matter exists in three physical states:
    • solid
    • liquid
    • gas

Further detail

  • Examples of solids include ice, rock, and sand; examples of liquids include water, oil, and milk; examples of gases include air and water vapor.

2. Properties of Solids

Key Concepts & Definitions

  • Solid: Has a shape of its own that does not depend on the shape of its container.

Essential Points

  • Solids are hard and do not deform when grasped, and they can be grasped with the fingers.

3. Properties of Liquids

Key Concepts & Definitions

  • Liquid: Has no shape of its own and takes the shape of its container.
  • Free surface: The part of a liquid in contact with air, and it is always plane and horizontal.

Essential Points

  • Liquids cannot be grasped with the fingers.

4. Properties of Gases and Fluids

Key Concepts & Definitions

  • Fluid: Liquids and gases are considered fluids because they flow.

★ Must-know

  • Gases are compressible and expandable.

  • A gas has no shape of its own and occupies all the space available to it.

Further detail

  • Gases cannot be grasped with the fingers.

Test yourself

Take a 5-question practice quiz on States of Matter and Their Properties, with every answer explained.

1. A student sorts water, oil, sand, air, and water vapor by physical state. Which classifications are correct?

2. A liquid is poured into a narrow vessel and left undisturbed. Which statements describe its shape and free surface?

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Study with flashcards

Memorize the key concepts of States of Matter and Their Properties with 14 flashcards.

What three physical states does matter occur in?

Solid, liquid, and gas.

What determines a solid’s shape?

Its own shape, independent of its container.

What shape does a liquid take when poured into a container?

The shape of its container.

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