Titanium dioxide is a chemical used in toothpaste to
A) disinfect the toothbrush.
B) strengthen tooth enamel.
C) make the toothpaste white.
D) remove plaque.
E) keep the paste from spoiling.
Correct Answer:
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Q10: The product of (-4)× (-5)is
A)-1
B).20
C)-20
D)0
E).1
Q11: For the equation 6y -20 = -2
Q12: In order to enhance your learning in
Q13: You notice that there is more traffic
Q14: Which of the following is a chemical?
A)light
B)sound
C)sugar
D)noise
E)heat
Q16: Water, H2O, is an example of a(n)
A)chemical.
B)electric
Q17: In the number 12.345,the 3 is in
Q18: For the equation 4x + 2 =
Q19: When a part of the body is
Q20: Which of the following is NOT a
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