Which element must be present for a substance to be classified as organic?
A) iodine
B) iron
C) carbon
D) calcium
Correct Answer:
Verified
Q11: NaCl,table salt,is called a(n)
A)anion.
B)electrolyte.
C)cation.
D)ion.
Q13: Which of the following represents bicarbonate,an anion
Q14: This ion has 8 protons in the
Q17: The word ferrous refers to
A) an acid
Q19: [H⁺] refers to
A)an isotope of hydrogen.
B)heavy hydrogen.
C)hydrogen
Q19: A cation is a(n)
A) positively charged ion.
B)
Q20: Which of the following acts as a
Q21: The heart pushes blood into the blood
Q22: In which of the following is the
Q23: An atom has 1 proton,0 neutrons,and 1
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