Zumdahl & DeCoste
Water H2O is an example of
A) chemical
B) solid
C) wave
D) electric charge
E) element - answer-A
In this list, which substance can be classified as a chemical?
A) salt
B) sleep
C) cold
D) heat
E) temperature - answer-A
One example of a chemical used in toothpaste is
A) chlorine
B) sulfur
C) carbon dioxide
D) calcium carbonate
E) sugar - answer-D
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, Which of the following is not a chemical?
A) salt
B) water
C) light
D) carbon dioxide
E) sugar - answer-C
Sodium fluorophosphate is a chemical used in toothpaste to
A) make the paste white
B) disinfect the toothbrush
C) keep the paste from spoiling
D) remove plaque
E) strengthen tooth enamel - answer-E
Titanium dioxide is a chemical used in toothpaste to
A) make the paste white
B) disinfect the toothbrush
C) keep the paste from spoiling
D) remove plaque
E) strengthen tooth enamel - answer-A
When a part of the body is injured, substances called _____ are released
A) aspirins
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