Chemical Changes, Naming, Formulas, & Equations And Acids & Bases Quiz Review Question Preview (ID: 13434)
Chemical Changes, Naming, Formulas, & Equations And Acids & Bases Quiz Review.
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The only sure evidence for a chemical reaction is
a) the formation of a gas.
b) a color change.
c) the production of one or more new substances.
d) changes in properties.
CaCO3 represents a chemical
a) symbol.
b) formula.
c) subscript.
d) reaction.
What happens when chemical bonds break and new bonds form?
a) a physical change.
b) a chemical change.
c) matter is destroyed.
d) surface area is increased.
A shorter, easier way to show a chemical reaction, using smbols instead of words, is called a
a) chemical equation.
b) chemical formula.
c) symbol.
d) subscript.
The substances listed on the left side of a chemical equation are the
a) products.
b) coefficients.
c) precipitates.
d) reactants.
A chemical reaction that absorbs energy in the form of heat is described as
a) endothermic.
b) exothermic.
c) combustion.
d) unbalanced.
The minimum amount of energy needed to start a reaction is the
a) exothermic energy.
b) endothermic energy.
c) activation energy.
d) chemical energy.
Every chemical reaction involves a change in
a) mass.
b) energy.
c) concentration.
d) state.
Acids have a
a) sour taste.
b) bitter taste.
c) slippery feel.
d) soapy feel.
Bases have a
a) sour taste.
b) sweet taste.
c) slippery feel.
d) mild taste.
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