Atoms And Bonds Test #2 Question Preview (ID: 12667)
Chemistry.
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Protons have a _____________________ charge.
a) positive
b) negative
c) neutral
d) weak
Neutrons have a ______________________ charge.
a) neutral
b) negative
c) positive
d) strong
Substances that form as a result of the reaction are called the _____________.
a) products
b) reactants
c) chemical reaction
d) subscripts
Balling up paper is an example of a _____________________________.
a) physical change
b) chemical change
c) chemical reaction
d) none of the above
A process that produces a chemical change is called a ___________________.
a) Chemical Reaction
b) Chemical Change
c) Physical Change
d) Product
A reaction that releases energy is called an __________________________ reaction.
a) exothermic
b) endothermic
c) physical
d) chemical
H2O is an example of a ______________________________________.
a) chemical formula
b) subscript
c) coefficient
d) reaction
A reaction that absorbs energy is called an _________________________ reaction.
a) endothermic
b) exothermic
c) chemical
d) physical
A change that affects only a substance’s size, shape, or whether it is a solid, liquid, or gas is called a _________________________________________.
a) physical change
b) chemical change
c) chemical reaction
d) state reaction
Substances that exist before the reaction begins are called the ______________.
a) reactants
b) products
c) chemical reaction
d) chemical change
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