Sub Lesson_Unit 1 Review - Temperature, heat,phases, and ER

A. Cl₂

B. Ar

C. CO₂

D. S₈

A. 2 Al, 1 S, and 4 O

B. 2 Al, 3 S, and 12 O

C. 6 Al, 3 S, and 12 O

D. 2 Al, 3 S, and 7 O

A. contain only one type of atom

B. must have a fixed composition

C. can have variable proportions

D. always separate into visible layers

Na₂CO₃

Ca₃(PO4)₂

(NH₄)₂S

LiCl

A. an element

B. a compound

C. a homogeneous mixture

D. a heterogeneous mixture

A. a pure element

B. a pure compound

C. a homogeneous mixture

D. a heterogeneous mixture

A. total potential energy of a sample

B. average kinetic energy of the particles

C. total mass of the particles

D. strength of the attractions between particles

A. the same average kinetic energy and more thermal energy

B. greater average kinetic energy and the same thermal energy

C. less average kinetic energy and more thermal energy

D. the same average kinetic energy and the same thermal energy

A. 238 K

B. 273 K

C. 308 K

D. 335 K

A. 25 mL of water at 298 K

B. 50 mL of water at 40°C

C. 75 mL of water at 310 K

D. 100 mL of water at 30°C