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Gas

Solid. Can’t change shape or volume. Liquid. Can change shape not volume. Gas. Can change shape and volume. freezing. -liquid to solid. melting. -solid to liquid. -gas to liquid. condensation. vaporization/boiling. -liquid to gas. sublimation. -solid to gas.

candice-emerson
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Gas

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  1. Solid Can’t change shape or volume Liquid Can change shape not volume Gas Can change shape and volume

  2. freezing -liquid to solid melting -solid to liquid -gas to liquid condensation vaporization/boiling -liquid to gas sublimation -solid to gas Temperature measures the Kinetic Energy (speed) of the particles in a substance.

  3. As you add heat to a substance the particles will move faster. Water boils at 100oC and ice water exists at 0oC.

  4. Hold paper sideways, holes on top Temperature (oC) --> start at zero, every other square is 10 degress. Heating Curve of Water Time (min) --> start at zero, every other square is 1 minute

  5. Sources of error could be calibration of thermometer, purity of the water, the placement of the thermometer, how you stirred,. Water can boil at temps greater than 100OC if there are impurities in the water. Another possibility is a miscalibrated thermometer

  6. (When ice melts or water boils) The temperature of a substance going through a phase change will remain constant. (When there was only water!) The temperature increased when there was only one phase present in the beaker.

  7. While the ice is melting, the energy is weakening the intermolecular forces causing a phase change. When only water is in the beaker, the energy speeds up the water molecules, which increases temperature. When the water is boiling the energy is weakening the intermolecular forces causing a phase change.

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