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STATES OF MATTER

STATES OF MATTER. Chapter 14 Lesson 1 Pages E74 – E79. Objectives. Identify some properties of each state of matter. Recognize that matter exists in three familiar states, or phases. Main Idea.

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STATES OF MATTER

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  1. STATES OF MATTER Chapter 14 Lesson 1 Pages E74 – E79

  2. Objectives • Identify some properties of each state of matter. • Recognize that matter exists in three familiar states, or phases.

  3. Main Idea • Matter can exist in three familiar states: solids, liquids, and gases. These states are determined by the motion and arrangement of particles.

  4. States of Matter • It is the physical form that matter takes up • There are three familiar states: • Solid • Liquid • gas

  5. Particles and States of Matter • All matter is made up of atoms & molecules • The movement of these particles determines the state of matter • Solids: particles are held together very closely. They vibrate in place. • Liquids: particles can slip past each other and move about. • Gases: particles are spread very far apart. Constantly moving and bouncing off one another.

  6. SOLIDS • A form of matter that has a definite shape and volume • One property of a solid is they keep their shape. • Another property is definite volume. • Foam football is a solid. When squeezed it appears to change shape & volume, but it is actually the pockets of air that change.

  7. LIQUIDS • A form of matter that has a definite volume, but no definite shape. • Liquid will change shape to match the shape of its container. • No definite shape because their particles are not held rigidly in place. • Any substance whose particles can flow freely is called a fluid.

  8. GAS • A form of matter that has no definite shape or volume • The particles are constantly moving & bouncing off each other • When gas is placed in a container, the particles spread out to fill the container and take its shape. • The particles are free to move and flow, which means all gases are fluids

  9. GAS • Unlike solids & liquids, gases are very compressible. • Gases have much lower densities than liquids & solids. • Objects with lower densities float in fluids with higher densities.

  10. STATES OF MATTER

  11. REVIEW

  12. What two factors determine the state of matter of an object or sample? • The arrangement & movement of the particles

  13. What are the three familiar states of matter? • Solid • Liquid • Gas

  14. Describe solid in terms of shape and volume. • Definite shape and volume

  15. Describe liquids in terms of shape and volume. • Definite volume, no definite shape

  16. Describe gases in terms of shape and volume. • No definite volume, no definite shape

  17. Solids and liquids are similar because both • A. Are fluids. • B. Are compressible • C. Have no definite shape. • D. Have definite volume.

  18. Solids and liquids are similar because both • D. Have definite volume.

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