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In chemical reactions, what does the principle of conservation of mass mean?
The reactions is a physical change.
formula
Matter is not created or destroyed.
16 g
the production of one or more new substances.
subscript
number of molecules or atoms of each substance in the reaction.
reactants
The number placed below an element’s symbol in a chemical formula is called a
The reactions is a physical change.
formula
Matter is not created or destroyed.
16 g
the production of one or more new substances.
subscript
number of molecules or atoms of each substance in the reaction.
reactants
In a chemical equation, numbers often appear in front of a chemical formula. These numbers tell you the
The reactions is a physical change.
formula
Matter is not created or destroyed.
16 g
the production of one or more new substances.
subscript
number of molecules or atoms of each substance in the reaction.
reactants
Which of the following is NOT a correct inference you can make about the burning of a candle?
The reactions is a physical change.
formula
Matter is not created or destroyed.
16 g
the production of one or more new substances.
subscript
number of molecules or atoms of each substance in the reaction.
reactants
The substances listed on the left side of a chemical equation are the
The reactions is a physical change.
formula
Matter is not created or destroyed.
16 g
the production of one or more new substances.
subscript
number of molecules or atoms of each substance in the reaction.
reactants
The only sure evidence that a chemical reaction has taken place is
The reactions is a physical change.
formula
Matter is not created or destroyed.
16 g
the production of one or more new substances.
subscript
number of molecules or atoms of each substance in the reaction.
reactants
NaCl represents a chemical
The reactions is a physical change.
formula
Matter is not created or destroyed.
16 g
the production of one or more new substances.
subscript
number of molecules or atoms of each substance in the reaction.
reactants
If there are 16 grams of product produced by the chemical reaction, how many grams of reactant were consumed?
The reactions is a physical change.
formula
Matter is not created or destroyed.
16 g
the production of one or more new substances.
subscript
number of molecules or atoms of each substance in the reaction.
reactants
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