Classify each example as a chemical or physical change. Bre…

Classify each example as a chemical or physical change. Breaking a bone [a1] A popsicle melting [a2] Cutting down a tree [a3] Tearing paper [a4] An orange peel rotting [a5] Burning a marshmallow [a6] A change in which the identity of a substance remains constant [a7] A change that produces a different substance than the starting substance [a8]

The lowest temperature recorded in a particular city during…

The lowest temperature recorded in a particular city during the past year -16.06 oC.  What was the temperature on the Kelvin scale? [an1] K   The highest temperature recorded in the same city during the past year was 305.72 K.  What was the temperature in degrees Celsius? [an2] oC

Graph 1  On the top half of a sheet of paper, graph the com…

Graph 1  On the top half of a sheet of paper, graph the competitive market for beef under the following scenario:  Potatoes (often eaten with beef) becomes more expensive, and then, the cost of producing beef increases. Hint: There will be two shifts and three equilibrium points. Use abstract notation with P1, P2, P3, and Q1, Q2, and Q3.  ​ After you complete your graph, hold it up to the camera for three seconds, then click “True.”