Question # 1 (Multiple Answer) Which of the following is a characteristic of the plasma state?

A) ionized gas molecules
B) high velocity particles
C) high intermolecular force strength
D) mixture of gases

Question # 2 (Multiple Choice) As an object is raised upward from the earth's surface, its potential energy

A) decreases
B) becomes problematic
C) remains the same
D) increases

Question # 3 (Multiple Answer) The number of calories needed to raise the temperature of 1 gram of any substance by 1 degree C is that substance's

A) heat of fusion
B) latent heat
C) heat of vaporization
D) specific heat capacity

Question # 4 (Multiple Choice) The spring of a ticking watch possesses

A) potential energy only
B) kinetic energy only
C) neither kinetic nor potential energy
D) both kinetic and potential energy

Question # 5 (Multiple Answer) Heat transfer through space from our sun occurs by

A) convection
B) Pascal's Law
C) conduction
D) radiation
E) none of the above answers

Question # 6 (Multiple Answer) The property of matter that is most important in determining its state (i.e., solid, liquid, or gas) is

A) temperature
B) color
C) humidity
D) pressure
E) specific heat

Question # 7 (Multiple Answer) If molecules of a liquid gain enough kinetic energy to break free from intermolecular forces and become a vapor, we call this process

A) condensation
B) equilibrium
C) melting-freezing point
D) evaporation

Question # 8 (Multiple Answer) In a chemical change energy is used to

A) cause a change of state
B) change the number and position of atoms
C) break or form bonds within molecules
D) overcome intermolecular forces

Question # 9 (Multiple Choice) The average kinetic energy of the molecules of a substance is

A) heat of fusion
B) heat
C) heat of vaporization
D) temperature

Question # 10 (Multiple Choice) The amount of heat required to melt 1 gram of ice with no change in temperature is

A) 720 cal
B) 80 cal
C) 540 cal
D) 0 cal
E) none of the above answers

Question # 11 (Multiple Answer) Increasing the temperature of a substance results in an increase in

A) kinetic energy
B) number of chemical bonds
C) volume
D) molecular speed

Question # 12 (Multiple Choice) The number of calories given up by 1.0 gram of steam at 100. degrees C when it changes to water at 100. degrees C is

A) 80 cal
B) 720 cal
C) 540 cal
D) 620 cal

Question # 13 (Multiple Choice) A calorie is defined as the heat energy needed to raise the temperature of

A) one kilogram of water by 1 degree C
B) one gram of water by 1 degree C
C) one gram of any substance by 1 degree C
D) one kilogram of water by 10 degrees C

Question # 14 (Multiple Choice) If the specific heat of aluminum is 0.21 cal/g degree C, how much heat is given off when 10. grams of aluminum is cooled from 50. to 10. degrees C?

A) 84 cal
B) 290 cal
C) 810 cal
D) 390 cal
E) none of the above answers

Question # 15 (Multiple Choice) Raising 100. grams of water from 40. to 60. degrees C requires the addition of

A) 2400 cal
B) 1500 cal
C) 2000 cal
D) 1000 cal
E) none of the above answers

Question # 16 (Multiple Answer) Which of the following is a value for atmospheric pressure at sea level:

A) 1 atm
B) 101.3 kPa
C) 273 degrees C
D) 14.7 lb/in^2
E) 760 mm Hg

Question # 17 (Multiple Answer) All oxidation reactions, such as the burning of fuels, are

A) physical changes
B) exothermic
C) changes of state
D) endothermic

Question # 18 (Multiple Choice) The breaking up of a compound by means of an electric current is called

A) hydrolysis
B) electrolysis
C) sublimation
D) homogenation