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A reaction that releases energy is called an __________________________ reaction.
physical change
exothermic
neutral
physical change
positive
products
chemical formula
endothermic
Balling up paper is an example of a _____________________________.
physical change
exothermic
neutral
physical change
positive
products
chemical formula
endothermic
Protons have a _____________________ charge.
physical change
exothermic
neutral
physical change
positive
products
chemical formula
endothermic
Neutrons have a ______________________ charge.
physical change
exothermic
neutral
physical change
positive
products
chemical formula
endothermic
A reaction that absorbs energy is called an _________________________ reaction.
physical change
exothermic
neutral
physical change
positive
products
chemical formula
endothermic
H2O is an example of a ______________________________________.
physical change
exothermic
neutral
physical change
positive
products
chemical formula
endothermic
Substances that form as a result of the reaction are called the _____________.
physical change
exothermic
neutral
physical change
positive
products
chemical formula
endothermic
A change that affects only a substance’s size, shape, or whether it is a solid, liquid, or gas is called a _________________________________________.
physical change
exothermic
neutral
physical change
positive
products
chemical formula
endothermic
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