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Chapter 16 vocab
chapter 16
Question | Answer |
---|---|
explanation of the behavior or molecules in matter;states that all matter is made of constantly moving particles that collide without losing energy. | kinetic theory |
temperature at which a solid begins to liquefy. | melting point |
amount of energy required to change a substance from the solid phase to the liquid phase. | heat of fusion |
the temperature at which the pressure of the vapor in the liquid is equal to the external pressure acting on the surface of the liquid. | boiling point |
the amount of energy required for the liquid at its boiling point to become a gas. | heat of vaporization |
spreading of particles throughout a given volume until they are uniformly distributed. | diffusion |
matter consisting of positively and negatively charged particles. | plasma |
increase in the size of a substance when the temperature is increased | thermal expansion |
ability of a fluid-a liquid or a gas-to exert an upward force on an object immersed in the fluid. | buoyancy |
amount of force exerted per unit area;si unit is the pascal. | pressure |
a fluids resistance to flow. | viscosity |
si unit of pressure. | pascal |