05 Notes - Liquids - Substances with low boiling points...

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Pluchino Regents Chemistry Phases of Matter 05 Liquids Aim: How do the molecules of a substance behave in the liquid phase? Do Now: Describe the particles of a solid, a liquid and a gas. Liquids Definite volume, no definite shape Particles are packed close together, but move rather freely Usually associated with medium IFM In order for a substance to dissolve in another substance, they must have the same polarity. LIKES DISSOLVE LIKES! Vapor Pressure: The pressure of a vapor in equilibrium with its gas phase When the vapor pressure equals the atmospheric pressure, boiling will occur
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Unformatted text preview: Substances with low boiling points have high vapor pressure Practice: Use table H to answer the questions. 1. Which liquid has the lowest boiling point at STP? 2. Which liquid has the greatest intermolecular forces? 3. Which liquid will boil at a pressure of 50 kPa and a temperature of 61°C? Conclusions: The properties of liquids are between those of a solid and a liquid “Likes dissolve likes” Substances boil when vapor pressure and atmospheric pressure are equal Use Table H...
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