1 Which statements describe a crystal of salt? Choose all that apply.
Do It is made up of many atoms.
B It is made up of many molecules.
C
its shape is determined by the arrangement of its atoms.
D
E
its size is determined by the arrangement of its atoms.
Its atoms move freely around one another.

Which position represents spring in the southern hemisphere? a) b) c) d)

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead