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Which one is an example of a physical change?
physical
the mass of the products is equal to the mass of the reactants
melting
cutting the lawn
endothermic
comes from the breaking and forming of bonds.
more
the reaction is exothermic because heat was released by the reaction
When a physical or chemical changes takes place, where heat energy is taken in, it is a(n) ________________________ process.
physical
the mass of the products is equal to the mass of the reactants
melting
cutting the lawn
endothermic
comes from the breaking and forming of bonds.
more
the reaction is exothermic because heat was released by the reaction
Observing the mass of the products and reactants in a reaction, you would notice that...
physical
the mass of the products is equal to the mass of the reactants
melting
cutting the lawn
endothermic
comes from the breaking and forming of bonds.
more
the reaction is exothermic because heat was released by the reaction
When a reaction occurs, the thermometer in the container records a decrease in temperature, because...
physical
the mass of the products is equal to the mass of the reactants
melting
cutting the lawn
endothermic
comes from the breaking and forming of bonds.
more
the reaction is exothermic because heat was released by the reaction
All of the following are examples of exothermic reactions, except:
physical
the mass of the products is equal to the mass of the reactants
melting
cutting the lawn
endothermic
comes from the breaking and forming of bonds.
more
the reaction is exothermic because heat was released by the reaction
When the properties of matter do not change the identity of the substance, a(n) _______________ process has occured.
physical
the mass of the products is equal to the mass of the reactants
melting
cutting the lawn
endothermic
comes from the breaking and forming of bonds.
more
the reaction is exothermic because heat was released by the reaction
A solid is ______________ condensed than a liquid.
physical
the mass of the products is equal to the mass of the reactants
melting
cutting the lawn
endothermic
comes from the breaking and forming of bonds.
more
the reaction is exothermic because heat was released by the reaction
During an exothermic reaction, the energy given off...
physical
the mass of the products is equal to the mass of the reactants
melting
cutting the lawn
endothermic
comes from the breaking and forming of bonds.
more
the reaction is exothermic because heat was released by the reaction
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