MATTER ANYTHING THAT HAS MASS AND TAKES UP

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MATTER

MATTER

ANYTHING THAT HAS MASS AND TAKES UP SPACE

ANYTHING THAT HAS MASS AND TAKES UP SPACE

Bill Nye Phases of Matter

Bill Nye Phases of Matter

SINGLE FACTOR THAT DETERMINES STATE OF MATTER:

SINGLE FACTOR THAT DETERMINES STATE OF MATTER:

PARTICLE MOTION

PARTICLE MOTION

KINETIC THEORY OF MATTER • All matter is made of small particles in constant

KINETIC THEORY OF MATTER • All matter is made of small particles in constant motion • The higher the temperature the faster the particle motion • At the same temperature, more massive particles move slower than less massive particles

What is Matter Video Clip

What is Matter Video Clip

SOLIDS • Traditional definition: definite volume definite shape • Expands only slightly upon heating

SOLIDS • Traditional definition: definite volume definite shape • Expands only slightly upon heating • Kinetic theory definition: 3 -D vibratory motion about a fixed point

THERMAL EXPANSION • Almost all matter expands as it gets hotter, and contracts when

THERMAL EXPANSION • Almost all matter expands as it gets hotter, and contracts when it gets colder • As a solid is heated-particles begin to move faster and begin vibrating against each other with more force causing the particles to spread apart in ALL directions • The particles do NOT get larger, it is the size of the spaces between the particles that increas

LIQUIDS • Traditional definition: definite volume, no definite shape. Flow and take on shape

LIQUIDS • Traditional definition: definite volume, no definite shape. Flow and take on shape of its container. • Tend to expand upon heating • Kinetic theory definition: particles undergoing rolling motion seeking lowest possible position

GASES

GASES

 • Traditional definition: no definite shape no definite volume (takes on shape and

• Traditional definition: no definite shape no definite volume (takes on shape and volume of container) • Compressible • Kinetic theory definition: high speed, straight line random motion

 • FYI: measurements indicate that the average speed of oxygen molecules in air

• FYI: measurements indicate that the average speed of oxygen molecules in air at 20°C is an amazing 1700 km/hr. At these high speeds, the odor molecules from a hot cheese pizza in Washington D. C. should reach Mexico City in about 106 minutes. • Why do they not reach Mexico City?

Random Walk

Random Walk

VAPOR –VS- GAS • Gas-limited to those substances that exist in the gaseous state

VAPOR –VS- GAS • Gas-limited to those substances that exist in the gaseous state at ordinary room temperature • Vapor-describes the gaseous state of a substance that is generally a liquid or solid at room temperature