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Solids, Liquids, and Gases
States of Matter
States of Matter
• All matter takes up space and has mass
• There are 4 states of matter
• Example: Water
Solids
• Every solid has a definite shape and a definite volume.
• The Kinetic Theory of Matter (p. 215)
• Crystalline solids• Noncrystalline solids
Liquids
• A liquid flows and takes the shape of its container.
• Liquids can’t normally be squeezed to a smaller volume.
• Also explained by kinetic theory (p. 216)
• Example: Ice cream
• In your notebooks:– Explain how the motion
of particles changes when matter changes from one state to another.
Gases
• “springy”• Expand or contract to fill
the space available to them.
• Can be squeezed into smaller space.
• Particles are free to move in all directions until they have spread evenly throughout their container.
• Example: pumping up a bicycle tire (p. 217)
• In your notebooks:– Look at figure 8-6– Read A, B, and C– In a paragraph, explain
the difference between gas, liquid, and solid.
Plasma
• The most common state of matter in the universe.
• Found in stars (the sun) and nebula. (p. 218)
• A gaslike mixture of positively and negatively charge particles.
• Thermal Expansion