Classifying Chemcial Reactions Question Preview (ID: 3309)


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The breaking down of a substance into two or more new substances is ________
a) displacement
b) synthesis
c) decomposition
d) endothermic

A chemical reaction in which two or more substances combine to form another substance is a
a) synthesis reaction
b) displacement reaction
c) decomposition reaction
d) precipitate reaction

When one element replaces another element in a compound, the reaction is a _________ reaction
a) synthesis
b) single displacement
c) decomposition
d) double displacement

According to the law of conservation of mass, how does the mass of the products in a chemical reaction compare with the mass of the reactants?
a) The mass of the products is greater
b) The mass of the reactants is greater
c) There is no relationship
d) They are equal

What type of reaction is this? AB + CD -----> AD + BC
a) synthesis
b) single displacement
c) double displacement
d) decomposition

What type of equation is this? A + B -----> AB
a) synthesis
b) single displacement
c) double displacement
d) decomposition

What type of equation is this? A + BC ------> AC + B
a) synthesis
b) single displacement
c) double displacement
d) decomposition

Breaking chemical bonds _________ energy
a) uses/ requires
b) releases
c) emmits
d) explodes

A _______________ is a change of one or more substances into a new substance
a) Chemical equation
b) Chemical reaction
c) Chemical problem
d) Chemistry

Subscripts represent the number of __________ in a molecule of a particular element
a) atoms
b) molecules
c) substances
d) liquids

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