solid to liquid Melting What phase of matter is “B”? A B C Temperature Pressure Liquid.
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Transcript of solid to liquid Melting What phase of matter is “B”? A B C Temperature Pressure Liquid.
![Page 1: solid to liquid Melting What phase of matter is “B”? A B C Temperature Pressure Liquid.](https://reader036.fdocuments.in/reader036/viewer/2022062517/56649f165503460f94c2b6b5/html5/thumbnails/1.jpg)
Review: LIQUIDS &
PHASE CHANGES
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solid to liquid
Melting
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What phase of matter is “B”?
A
B
C
Temperature
Pres
sure
Liquid
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________is the gas phase of a substance normally solid or liquid at room temperature
Vapor
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Freezing occurs by the release of _____
energy
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Describe a volatile liquid in terms of its rate of
evaporation.Evaporates quickly
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______ is the resistance of a liquid to flow
Viscosity
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What phase of matter is “A”?
A
B
C
Temperature
Pres
sure
Solid
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What is the normal boiling point of water?
100C
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Melting occurs by energy being ______.
absorbed
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____________ is the temperature and pressure at which all 3
states of matter are at equilibrium
Triple point
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_______shows how states of matter are affected by
changes in temperature/pressure
Phase diagram
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solid to gas
Sublimation
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The triple point of this substance occurs at:
5.2 atm & 216.6 K
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__________ is a dynamic condition in which two opposing physical
or chemical changes occur at equal rates in a given closed system
Equilibrium
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________ is the temperature at which equilibrium vapor pressure
equals atmospheric pressure
Boiling point
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_______ is the pressure exerted by a vapor in equilibrium with its corresponding liquid at a
given temperature.Equilibrium vapor pressure
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____________ is the spontaneous mixing of
two or more substances.Diffusion
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When energy is added to a substance, the
particles would move ___________
Faster
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When does a liquid boil?
Equilibrium vapor pressure EQUALS atmospheric pressure
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When energy is taken away from a substance, the particles would move
__________Slower
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What is the most abundant liquid?
Water
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_____________ is a force common to all liquids that tends to pull
adjacent parts of a liquid’s surface together.
Surface tension
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List 2 examples of surface tension.
MeniscusDroplets can formObjects floatCapillary rise
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List a volatile substance
Rubbing alcoholNail polish removerGasolinehairspray
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When a system at equilibrium is disturbed by application of a
stress, it attains a new equilibrium position that minimizes the stress.
This is known as ___________
Le Chatelier’s Principle
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liquid to solid
Freezing
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C(s) + H2O(g) CO(g) + H2(g) If the concentration of H2O was increased, the system would shift to the ________
Right
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How does a substance evaporate, if equilibrium vapor pressure is LOW?
WHY?SLOWLY!B/c there are STRONG IM forces and requires MORE kinetic energy to become a vapor
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Describe a liquid in terms of particle spacing.
Particles are packed relatively closely together
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Describe a liquid in terms of particle motion.
Particles vibrate around MOVING points
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gas to liquid
Condensation
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Describe the general volume of a liquid and
use KMT to explain.Definite VOLUME- b/c particles are close together
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Describe the general shape of a liquid and use
KMT to explain.NO Definite SHAPE- b/c particles vibrate around moving points
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Describe a liquid-vapor system at equilibrium.
The number of particles leaving the liquid (vaporization) EQUAL the number of particles re-entering the liquid (condensation)
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gas to solid
Deposition
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What happens to the boiling point of liquids on top of Mt. Everest? WHY?Boiling point is lowerB/c atmospheric pressure is lower
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liquid to gas
Vaporization
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What phase of matter is “C”?
A
B
C
Temperature
Pres
sure
Gas
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What is the difference between the IM forces
during melting and freezing?
Melting = Less IM forces b/c more particle collisions
Freezing = MORE IM forces b/c particles are moving slower