At a crime scene you find a piece of glass with a red, dried liquid, and a yellow fiber on the edge lying on the ground. Upon closer inspection, you notice that there is also a smudged fingerprint crossing the center of the glass. Explain how you would collect, preserve and analyze all of this evidence. What would you hope to find out from each piece of evidence? Indicate whether the glass, red liquid, fingerprint and yellow fiber are Individual or Class evidence and discuss why.

Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc

Phase changes are chemical changes. true or false

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