The blending of two or more kinds of molecules is a(n) ____.
A) compound
B) isotope
C) reactant
D) mixture
E) chemical bond
Correct Answer:
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Q12: When an atom's outer electron shell is
Q13: Radioisotopes _.
A)are unstable and emit energy and
Q14: If a chlorine atoms has 7 electrons
Q15: A pure substance that cannot be broken
Q16: Which element is not one of the
Q18: A tracer is a substance with what
Q19: Positron emission tomography (PET)utilizes _ to yield
Q20: What makes water a good solvent?
A)It dissolves
Q21: A dissolved substance in water is a(n)_.
A)solvent
B)solute
C)antioxidant
D)free
Q22: The process by which the movement of
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