Chemical Changes, Naming, Formula, & Equations And Acid & Bases Quiz Review #2 Question Preview (ID: 13436)
Chemical Changes, Naming, Formula, & Equations And Acid & Bases Quiz Review #2.
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When a base is added to red litmus paper, the indicator turns
a) blue.
b) red.
c) purple.
d) orange.
When acids and bases come in contact with each other, they
a) explode.
b) become bitter.
c) make hydroxide.
d) neutralize each other.
A neutral solution has a pH of
a) 7.
b) 11.
c) 3.
d) 1.
Why should you NEVER taste or touch an unknown acid?
a) It could be corrosive.
b) It could be slippery.
c) It could smell bad.
d) It could bite you.
A precipitate is a ______ that forms from solutions during a chemical reaction.
a) gas.
b) solid.
c) liquid.
d) plasma.
In a(n) ________ change, elements and/or compounds rearrange to form new substance.
a) physical.
b) exothermic.
c) chemical.
d) endothermic.
The law of __________ states that during a chemical reaction, matter is not created or destroyed.
a) Conservation of Mass.
b) Conservation of Energy.
c) Conservation of Atoms.
d) Chemistry.
A chemical reaction that releases energy in the form of heat is a(n) ________ reaction.
a) chemical
b) physical
c) endothermic
d) exothermic
The process of solid ice changing into liquid water is a(n) _____________ change.
a) chemical
b) physical
c) endothermic
d) exothermic
What is the chemical formula for iron oxide.
a) IO
b) FeO2
c) FeO
d) IO2
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