Which of these is not a property of water?
A. density of liquid form is less than solid form
B. high boiling point compared to other hydrogen compounds
C. can absorb/release large quantities of heat without large temperature change
D. high surface tension
Viscosity increases when ____.
A. temperature decreases
B. none of these; viscosity is constant
C. carbon is introduced
D. temperature increases
Which of these describes the properties of a real gas?
A. It possesses mass.
B. It collides elastically with other gas particles when inside of a closed container.
C. It has no mass.
D. It can be accurately modeled using the equation pV = nRT, where p is the pressure, V is the volume, n is the number of moles of gas, R is the gas constant, and T is the temperature.
Reactions that absorb heat are called ____.
A. combustion
B. thermal
C. endothermic
D. exothermic
What is the molar mass of calcium if its atomic mass is 40 amu?
A. 80 grams/mole
B. 1 gram/mole
C. 40 grams/mole
D. 20 grams/mole
What is the name of NO2?
A. nitrogen oxide
B. nitrogen dioxide
C. nitrogen bioxide
D. nitrogen monoxide
BF3 is also known as ____.
A. boron trifluoride
B. boron tetrafluoride
C. tri-boron monofluoride
D. boron monofluoride
In the formula C12H22O11, the 12 following the carbon represents 12 ____ of carbon.
A. atoms
B. neutrons
C. electrons
D. molecules
In an ionic bond, a positively charged ion is attracted to what type of ion?
A. anion
B. cation
C. it is not attracted to another ion
D. neutral
High density matter, which is little affected by pressure and holds its shape, is classified as ____.
A. plasma
B. liquid
C. gas
D. solid
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