You need a special snow to make the best snowballs. This snow needs to be a little wet so the particles will stick together. Dry snow can be tightly pressed and will form snowballs because the higher pressure causes the snowflakes to melt somewhat. However, when you release the pressure, the snow goes back to a more solid form and the flakes no longer stick together.
Water is a unique substance in many ways. One of these special properties is the fact that solid water (ice) is less dense than liquid water just above the freezing point. The phase diagram for water is shown in the Figure below .
Phase diagram for water.
Notice one key difference between the general phase diagram and the phase diagram for water. In water’s diagram, the slope of the line between the solid and liquid states is negative rather than positive. The reason is that water is an unusual substance in that its solid state is less dense than the liquid state. Ice floats in liquid water. Therefore, a pressure change has the opposite effect on those two phases. If ice is relatively near its melting point, it can be changed into liquid water by the application of pressure. The water molecules are actually closer together in the liquid phase than they are in the solid phase.
Refer again to water’s phase diagram ( Figure above ). Notice point E, labeled the critical point . What does that mean? At 373.99°C, particles of water in the gas phase are moving very, very rapidly. At any temperature higher than that, the gas phase cannot be made to liquefy, no matter how much pressure is applied to the gas. The critical pressure (P c ) is the pressure that must be applied to the gas at the critical temperature in order to turn it into a liquid. For water, the critical pressure is very high, 217.75 atm. The critical point is the intersection point of the critical temperature and the critical pressure.
Read the section of the material at the link below that deals specifically with water:
The materials found on Course Hero are not endorsed, affiliated or sponsored by the authors of the above study guide
PSYC 101 • Benedictine Univ
PRACTICAL APPLICATION OF <b>PHASE</b> <b>DIAGRAM</b> OF <b>WATER</b> IN THE INDUSTRY.docx
CHEMISTRY PHYSICAL C • Passi Trade School, Passi City
Elaborate_PRE La'sky _AP_Phase diagrams of <b>Water</b> and Carbon Dioxide. (1).pdf
SCIENCE 23 • BBHAS
(1) quiz-worksheet-<b>phase</b>-<b>diagram</b>-of-<b>water</b>-vs-other-substances - copia.pdf
FISICA II 123A • ESPOL
<b>Phase</b> <b>Diagram</b> of <b>Water</b> and Carbon Dioxide.docx
SCIENCE 401 • Batangas State Univ
<b>Phase</b> <b>diagram</b> of <b>water</b> and carbon dioxide_STEM27.pdf
PDFS 231 • San Francisco State Univ
CBA 10234 • Pamantasan ng Lungsod ng Muntinlupa
Activity 6 - <b>PHASE</b> <b>DIAGRAM</b> OF <b>WATER</b> AND CARBON DIOXIDE.pdf
SCIENCE 430111 • Mary the Queen College
PHY 111 • San Beda College Alabang - (Alabang Hills Village, Muntinlupa City)
Chemical Equilibrium _ <b>Chemistry</b> for <b>Non</b>-Majors.pdf
CHE ORGANIC CH • Southern Technical College, Brandon
<b>Water</b> <b>Phase</b> <b>Diagram</b> and Carbon Dioxide <b>Phase</b> Diagram.docx
CHEMISTRY 1231 • SMK KGV
- General <b>Chemistry</b> 2- Activity no.1and 2- <b>Phase</b> <b>Diagram</b> of <b>Water</b> and Carbon Dioxide.docx
CHE 2 • RMCHS
In the <b>phase</b> <b>diagram</b> of ethanolethyl acetate (acquired at standard p.docx
CHEMISTRY MISC • ABA
<b>Chem</b> 162 Homework#5 - <b>Phase</b> Diagrams of Ternary Systems.pdf
CHEM 162 • Xavier Univ - Ateneo de Cagayan
Chapter 7 - <b>Phase</b> Equilibria - <b>Phase</b> <b>Diagram</b> of Binary System - Part 2.pptx
CHEMISTRY YBB1033 • Universiti Teknologi Mara