Although only about 100 elements exist,over __________________ compounds have been isolated,identified,and characterized.
A) one hundred thousand
B) one million
C) 20 million
D) 10 billion
Correct Answer:
Verified
Q4: On a Periodic Table,the columns of elements
Q11: Which substance is an element?
A)NO2
B)NaCl
C)N2
D)CH4
Q17: Which differentiates a compound from a mixture
Q20: The most numerous of the elements are
Q31: Which is not a mixture?
A)a jar filled
Q33: Which squares contain mixtures? Q37: Which symbol(s)represent(s)elements in the noble gas family? Q38: Which symbols represent only elements that are Q40: Which square(s)contain(s)only an element? Q41: During a chemical reaction,
A)atoms are rearranged.
B)some atoms
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