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The law of conservation of mass does not apply in a chemical reaction that takes place:
hydrogen peroxide becomes water
the formation of a precipitate
in an open container
exothermic
an egg absorbing heat while it is being cooked
they are poor conductors of electricity
adding a catalyst to decrease the amount of activation energy needed
by using coefficients
One way that non-metals are different from metals is that:
hydrogen peroxide becomes water
the formation of a precipitate
in an open container
exothermic
an egg absorbing heat while it is being cooked
they are poor conductors of electricity
adding a catalyst to decrease the amount of activation energy needed
by using coefficients
How does one balance an unbalanced chemical equation?
hydrogen peroxide becomes water
the formation of a precipitate
in an open container
exothermic
an egg absorbing heat while it is being cooked
they are poor conductors of electricity
adding a catalyst to decrease the amount of activation energy needed
by using coefficients
Which of the following would speed up the rate of a chemical reaction?
hydrogen peroxide becomes water
the formation of a precipitate
in an open container
exothermic
an egg absorbing heat while it is being cooked
they are poor conductors of electricity
adding a catalyst to decrease the amount of activation energy needed
by using coefficients
Which of the following is a sign that a chemical reaction has taken place?
hydrogen peroxide becomes water
the formation of a precipitate
in an open container
exothermic
an egg absorbing heat while it is being cooked
they are poor conductors of electricity
adding a catalyst to decrease the amount of activation energy needed
by using coefficients
The release of heat from the exhaust pipe of a car is an example of what kind of chemical reaction
hydrogen peroxide becomes water
the formation of a precipitate
in an open container
exothermic
an egg absorbing heat while it is being cooked
they are poor conductors of electricity
adding a catalyst to decrease the amount of activation energy needed
by using coefficients
Which of the following is an example of an endothermic reaction?
hydrogen peroxide becomes water
the formation of a precipitate
in an open container
exothermic
an egg absorbing heat while it is being cooked
they are poor conductors of electricity
adding a catalyst to decrease the amount of activation energy needed
by using coefficients
Which of the following is an example of a decomposition reaction?
hydrogen peroxide becomes water
the formation of a precipitate
in an open container
exothermic
an egg absorbing heat while it is being cooked
they are poor conductors of electricity
adding a catalyst to decrease the amount of activation energy needed
by using coefficients
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