Chemical Reactions Question Preview (ID: 169)


Identify These Reaction Types. TEACHERS: click here for quick copy question ID numbers.

This type of reaction always includes a diatomic oxygen molecule.
a) combustion
b) single replacement
c) double replacement
d) decomposition

This type of reaction has only one product
a) combustion
b) single replacement
c) synthesis
d) decomposition

This type of reaction has only one reactant
a) combustion
b) single replacement
c) double replacement
d) decomposition

The number 4 in the reactant 4NaCl represents
a) the subscript
b) the coefficient
c) the ratio of Na to Cl
d) the product

When balancing chemical equations, be sure that that you balance the number of ____ on both sides.
a) subscripts
b) molecules
c) atoms
d) coefficients

What type of reaction is the following: 2Na + Cl2 ---> 2NaCl
a) synthesis
b) decomposition
c) single replacement
d) double replacement

The mass of the products equals the mass of the reactants in the Law of
a) duplicity
b) infinite proportions
c) conservation of energy
d) conservation of mass

Which of the following is NOT evidence of a chemical change?
a) new product formed
b) change of state
c) release of energy
d) bubble formation

You can calculate the mass of an atom by adding the number of
a) protons and electrons
b) isotopes
c) electrons and neutrons
d) protons and neutrons

In the equation 2Na + Cl2 ---> 2NaCl, the NaCl is the
a) reactant
b) product
c) coefficient
d) subscript

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