Stiochemiotry Question Preview (ID: 3276)


Understanding The Definitions Of Moles And Chemical Reactions. TEACHERS: click here for quick copy question ID numbers.

Which type of Chemical Equation involves one compound breaking apart into two or more molecules?
a) Single Replacement
b) Synthesis
c) Double Replacement
d) Decomposition

The mass of reactants must equal the mass of the products due to the Law of...
a) Conservation of Mass
b) Multiple Proportions
c) Gravity
d) Avagadro's Number

The limiting reactant of a candle burning under a jar is the...
a) Carbon dioxide
b) jar
c) candle
d) oxygen

The reactant that is used up first in a chemcial reaction is known as the ____ reactant.
a) Excess
b) Limiting
c) Surplus
d) Restricting

Where do you find information needed to help you convert between moles and grams?
a) Mole Ration
b) Avogadro's #
c) Periodic Table
d) # of moles

The SI unit used to measure the number of particles in a substance is called the...
a) kilogram
b) liter
c) mole
d) meter

How many grams are in 4.5 moles of oxygen?
a) 72 grams
b) 0.28 grams
c) 2.709 x 10^24 grams
d) 36 grams

When gas burns to cook food, the type of reaction is...
a) decomposition
b) single replacement
c) combustion
d) synthesis

How many particles are in 9.6 moles of calcium?
a) 5.78 x 10^24 particles
b) 1.59 x 10^-23 particles
c) 384 particles
d) 0.24 particles

The number 6.02 times 10 to the 23rd power is known as...
a) Planck's constant
b) Einsteins Constant
c) Avogadro's Number
d) Schrodinger Number

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