Molecules are _______.
A) chemicals that cannot be broken or separated
B) two or more atoms held together by covalent bonds
C) atoms of an element
D) basic subunits of elements
Correct Answer:
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Q3: Which of the following are products of
Q4: Atoms are composed of_ ,and compounds are
Q5: Which of the following best represents kinetic
Q6: When a windmill turns to generate electricity,the
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Q9: _is defined as the number of protons
Q10: During the process of translation,codons found in_
Q11: Acid precipitation _.
A)has a pH lower than
Q12: The pH scale is a measure of
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