Ch. 9.1 HW Temperature. Page 304: Section 9.1 Review 1. The pan’s temperature decreases if the water’s temperature increases; The water and pan have reached.

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Presentation transcript:

Ch. 9.1 HW Temperature

Page 304: Section 9.1 Review 1. The pan’s temperature decreases if the water’s temperature increases; The water and pan have reached thermal equilibrium when their temperatures are the same. 2. C = C F = F 4.a, c 5. C, A, B (the blue particles in C have the greatest average kinetic energy and therefore have the highest temperature) 6. Popcorn kernels pop when the moisture inside the kernel turns into steam, creating pressure that ruptures the shell. Old kernels may dry out, add some water.

Temperature Conversions C, K C, 39 C 4.55 K, 99 F Which is hotter, 500 C or 500 K? 500 C is 773 K, so 500 C is hotter.

Why it Matters (page 300) 1. b. If the final temperature were less than 50 C, or greater than 60 C, energy would not be conserved.For energy to be conserved, the equilibrium temperature must be between the initial temperatures of the substances. 2. The water in the swimming pool has more internal energy. The much larger volume, and therefore the much larger number of particles, more than makes up for the lower temperature. The hot tea has a higher average KE, because temperature is proportional to average KE.

HW Internal Energy- energy of particles that compose matter (table 1, page 299) –Rotational –Vibrational –Translational

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