Questions

Explanations

16 Which term identifies a form of energy?

(1) combustion             (3) thermal

17 According to kinetic molecular theory, which statement describes one characteristic of an ideal gas system?

(1) The distance between gas molecules is smaller than the diameter of one gas molecule.

(2) The attractive force between two gas molecules is strong.

(3) The energy of the system decreases as gas molecules collide.

(4) The straight-line motion of the gas molecules is constant and random.

18 The temperature of a substance is a measure of the

(1) average kinetic energy of its particles

(2) average potential energy of its particles

(3) ionization energy of its particles

(4) activation energy of its particles

19 A real gas behaves most like an ideal gas at

(1) low pressure and high temperature

(2) low pressure and low temperature

(3) high pressure and high temperature

(4) high pressure and low temperature

20 A reaction is most likely to occur when the colliding particles have proper orientation and

(1) mass               (3) half-life

(2) volume          (4) energy