Air is an example of __________
A) an element.
B) a compound.
C) a pure substance.
D) a heterogeneous mixture.
E) a homogeneous mixture.
Correct Answer:
Verified
Q3: Which one of the following statements is
Q4: Which one of the following statements is
Q5: Which one of the following statements is
Q8: Which of the following is a heterogeneous
Q9: Which one of the following is a
Q15: A pure substance _
A)can not be separated
Q16: Which of the following is a pure
Q17: Which of the following is an element?
A)Cl2
B)H2O
C)NaCl
D)MgO
E)HCl
Q21: Which one of the following statements is
Q29: Which of the following processes is a
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