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