Which of the following substances is NOT an element?
A) iron
B) oxygen
C) water
D) carbon
E) hydrogen
Correct Answer:
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Q3: The atomic _ of an atom of
Q3: Chemistry is the branch of science that
Q4: An element with an atomic number of
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Q6: Which elements make up 95% (by weight)of
Q7: When atoms combine with other atoms,interactions occur
Q9: The atoms of the isotopes of a
Q10: The parts of an atom that lack
Q12: Which of the following is the number
Q13: Each element is composed of characteristic tiny
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