Chap 7

Question 1

SOLID structure, motion, shape, volume, density, compressibility

Answer 1

-Very closely packed in orderly manner
-Vibrate in a fixed position
-Fixed Shape
-Fixed volume
-High density
-Incompressible

Question 2

LIQUID structure, motion, shape, volume, density, compressibility

Answer 2

-closely packed in random manner
-slide over one another randomly
-takes shape of container
-fixed volume
-relatively high density
-incompressible

Question 3

GAS structure, motion, shape, volume, density, compressibility

Answer 3

-Very far apart
-Moves freely at high speeds randomly
-no fixed shape
-low density
-compressible

Question 4

Why temperature remains constant during melting

Answer 4

Average kinetic is constant. Work is done to overcome attractive forces. Separation increases and potential energy of molecules increases.

Question 5

Why temperature remains constant during boiling

Answer 5

Internal kinetic is constant. Work is done to overcome attractive forces and push back atmosphere to escape as gas.