An _____ is a compound that speeds up (catalyzes) a chemical reaction.
A) organelle
B) anion
C) enzyme
D) acid
Correct Answer:
Verified
Q9: Iron,calcium,and carbon are _.
A)elements
B)compounds
C)bases
D)solvents
Q10: In chemistry class,Karl combines hydrochloric acid with
Q11: An _ is a body structure composed
Q12: The atoms of a compound,such as sugar,are
Q13: Which of the following statements is true?
A)Protons
Q15: Which of the following organs helps maintain
Q16: Which of the following statements is true?
A)An
Q17: A food has a pH that is
Q18: A substance has a pH that is
Q19: A liquid has a pH that is
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