Answer Key Temperature and KE CW #1 Answer Key Answers may vary slightly State Attraction Movement Volume Shape between between molecules molecules Very strong Molecules stay Definite volume Definite attraction in fixed position Solid but vibrate Attracted, but Molecules can Definite volume on shape less than solid slip and flow of container Liquid molecules past each Molecules are Molecules can No definite No definite not attracted to easily move volume shape Gas each other past each other much (the least of all 3 states) G, S, G, L, S, G, L, S Answers may vary slightly Heated (word description) Heated (picture) Balloon expands Cooled (word description) Cooled (picture) Balloon shrinks This happens because when the molecules of the gas (air) are heated, they move faster, spread out and thus push out on the balloon. When the air is cooled, the molecules move slower, aren’t spread out and don’t push out on the balloon as much so it shrinks. Answers may vary slightly Heated (word description) Heated (picture)
Answer Key Temperature and KE CW #1 Answer Key Answers may vary slightly State Attraction between molecules Movement between molecules Volume Shape Solid Very strong attraction Molecules stay in fixed position but vibrate Definite volume Definite Liquid Attracted, but less than solid molecules Molecules can slip and flow past each Definite volume on shape of container Gas Molecules are not attracted to each other much (the least of all 3 states) Molecules can easily move past each other No definite volume No definite shape G, S, G, L, S, G, L, S Answers may vary slightly Heated (word description) Balloon expands Heated (picture) Cooled (word description) Balloon shrinks Cooled (picture) This happens because when the molecules of the gas (air) are heated, they move faster, spread out and thus push out on the balloon. When the air is cooled, the molecules move slower, aren’t spread out and don’t push out on the balloon as much so it shrinks. Answers may vary slightly Heated (word description) Heated (picture)
thermal-energy-classwork-homework-2015-10-09.docx