Preceptor Review Exam 1 - Click to edit Master subtitle...

Info iconThis preview shows pages 1–16. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Click to edit Master subtitle style 2/6/11 Phase Diagrams and Transitions Ashley McNelly and Jaqueline Platta 2/6/11 Solid-Liquid-Gas Transitions { 2 D D 5 9 3 D 2 -9 A 6 4 -4 C 6 3 -A B A B -0 4 5 D B E 8 4 F B 6 } Solid { 0 E 0 F 3 A -6 A 1 6 -4 9 F 1 -9 D 5 D -F 3 2 E 7 B F 9 7 E 4 5 } Gas { D 1 D A 2-C 2 C -4 5 1 3 -A 8 A C -8 0 C 2 F 3 4 9 E 9 C 8 } Liquid F r e e z i n g M e l t i n g D e p o s i t i o n Condensati on S u b l i m a t i o n Boiling 2/6/11 What Defines a Phase? v A phase is defined by a region of material where all properties are the SAME Examples of different phases: Liquid H2O vs. Solid H2O Liquid benzene vs. Liquid acetone 2/6/11 3 Perspectives of Phase Change Macroscopic: Visibly solid, liquid, or gas Microscopic: Solid particles organized, at the bottom Liquid particles near the bottom, loose, disorganized Gaseous particles spaced, top to bottom Symbolic: Phase change denoted ONLY by: (s) (l) 2/6/11 What You NEED to Label in your Pressure (w/units) on y-axis Temperature (w/units) on x-axis Triple Point (incl. Pressure & Temp values) Solid/Liquid/Gas phases (if given) Critical Point/Super Critical Fluid 2/6/11 Phase Diagram: CO2 Triple Point 2/6/11 Notes to Remember Phase=different properties (not just S/L/G) Phase transition is affected by TEMP. and PRESS. On phase diagram, sloped line leans toward LESS dense (phase "on top sinks, is MORE dense) At any point ON a line in the phase 2/6/11 Practice Problems In the following picture, which letters represent points at which liquid is present? a) A only b) B only c) C only d) A, B, and C 2/6/11 The following illustr ation is: A) Vaporization B) Melting C) Sublimation Practice Problems Click to edit Master subtitle style 2/6/11 A phase change from Phase A to Phase C is known as: A. Sublimation B. Freezing C. Deposition D. Condensation E. Vaporization F. Melting Practice Problems 2/6/11 At STP, this substance can exist as: A. a gas only B. a solid only C. a liquid only D. a solid or a gas Note that for our purposes standard temperature is 0bC and pressure is 1 atm. Practice Problems 2/6/11 If the temperature of the substance is held constant at 50&C, the phase change that would occur with a pressure increase from 1 atmosphere to 30 atmospheres is: A. sublimation B. deposition C. melting D. vaporization E. freezing F. condensation Practice Problems 2/6/11 Practice Problems The microscopic representation on the left is best described by which single point on the phase diagrams to A) Point A B) Point B C) Point C D Point D 2/6/11 At the tr iple point on a phase diagr am A) more solid is forming than liquid or gas B) more gas is forming than liquid or solid C) more liquid is forming than solid or liquid D) the liquid phase cannot exist E) none of the above Practice Problems 2/6/11 I n gener al, under what conditions does sublimation take place?...
View Full Document

Page1 / 74

Preceptor Review Exam 1 - Click to edit Master subtitle...

This preview shows document pages 1 - 16. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online