Question # 1 (Multiple Answer) Choose among the following the ones that show a correct match between chemical/physical change and energy transformation:

A) sanding wood: physical change, energy absorbed
B) burning coal: chemical change, exothermic
C) melting ice: physical change, energy released
D) digestion of food: chemical change, endothermic

Question # 2 (Multiple Choice) The sugar dehydration demonstration showed a chemical change in which _________ was removed from the sugar:

A) carbon
B) hydrogen
C) oxygen
D) water
E) sulfur

Question # 3 (Multiple Choice) When two elements, one a metal and the other a nonmetal, bond together, this type bond is called

A) covalent
B) ionic
C) metallic
D) coordinate-covalent

Question # 4 (Multiple Choice) That method of heat transfer involving movement of areas of hot fluids in circular motion with cooler fluids is called:

A) convection
B) conduction
C) evaporation
D) boiling
E) radiation

Question # 5 (Multiple Choice) A plane is flying along at 500.0 m at a speed of 200 km/hour. What distance prior to the target must the object be dropped from the plane to insure a hit (assuming no air resistance):

A) 1.34 km
B) 3.02 km
C) 0.15 km
D) 0.56 km

Question # 6 (Multiple Choice) Find all incorrect matches between gas and testing criteria:

A) carbon dioxide: bubble through lime water and look for precipitate
B) hydrogen gas: pop test
C) oxygen gas: puts out flame when added to bottle of gas

Question # 7 (Multiple Choice) Extending a graph line beyond known data but in a fashion consistent with the actual data is known as:

A) extrapolation
B) interpolation
C) tangent extension
D) slope
E) graphical extension

Question # 8 (Multiple Choice) Which of the following is out of order (correct sequence) in the production of a liquid thermometer:

A) fill tube with liquid to be used
B) heat tube and liquid hotter than it will be used
C) seal tube and cool
D) place numbers on tube representing correct temperature
E) calibrate in freezing water and boiling water (1 atm of pressure)

Question # 9 (Multiple Choice) Which of the following is not a correct value for 'g' at sea level:

A) 9.8 m/s^2
B) 32 ft/s^2
C) 980 cm/s^2
D) 14.7 lb/in^2

Question # 10 (Multiple Answer) From the list of answers, choose all that are correct concerning intermolecular forces:

A) hold liquid molecules together
B) hold solid molecules together and in place
C) hold gas molecules together
D) are potential energy forces
E) are kinetic energy forces

Question # 11 (Multiple Choice) The process of estimating values on graph lines between known data points is called:

A) extrapolation
B) interpolation
C) squeezing the data
D) extension division
E) slope

Question # 12 (Multiple Answer) When two objects are in thermal equilibrium they:

A) are at the same temperature
B) exchange no heat between them
C) contain the same amount of heat
D) are at room temperature

Question # 13 (Multiple Choice) what is the correct chemical name for NH4NO3

A) ammonium nitrite
B) ammonium nitrate
C) nitrogen hydrogen nitrate
D) draino

Question # 14 (Multiple Choice) Find the correct match between chemical reaction type and example reaction:

A) double displacement: calcium chlorate --> calcium chloride + oxygen gas
B) single displacement: sodium + silver chloride --> silver + sodium chloride
C) decomposition: hydrogen gas + oxygen gas --> water
D) synthesis: barium chloride + sodium nitrate --> barium nitrate + sodium choride

Question # 15 (Multiple Choice) When a ping-pong (table tennis) ball is dropped, it accelerates for a time then continues on at a constant velocity. This constant velocity is known as:

A) terminal velocity
B) accelerated motion
C) stop-action motion
D) parachute function

Question # 16 (Multiple Answer) Calculate the distance traveled by an accelerating object that is traveling at 30.0 m/s and accelerates as 5.00 m/s^2 for 2.00 minutes:

A) 39.6 km
B) 39 600 m
C) 3 960 000 cm
D) 3.96 E 4 m
E) none of the above

Question # 17 (Multiple Choice) When someone with a high amount of stomach acid takes an antacid tablet, the change in pH for that person is

A) from low numbers closer to 7
B) from 7 to much higher numbers
C) from low numbers to even lower numbers
D) from high numbers to even higher numbers

Question # 18 (Multiple Choice) That which can cause a change in the velocity of an object is:

A) acceleration
B) kinematics
C) force
D) vector

Question # 19 (Multiple Answer) The melting point of ice is the temperature at which any additional heat is used to:

A) cause melting with no rise in temperature
B) weaken intermolecular forces
C) cause the temperature of the ice to rise
D) make the molecules vibrate faster

Question # 20 (Multiple Choice) Our distillation of an alcohol/water mixture was possible due to:

A) a large enough difference in the melting point of the liquids
B) a large enough difference in the boiling points of the liquids
C) the difference in solubility of the two liquids
D) chromatography