Which symbol does not denote a compound?
A) CO2
B) CCl4
C) C2H4
D) Cr
E) CaCO3
Correct Answer:
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Q2: Which of the following is a pure
Q32: A reddish powder is heated gently in
Q34: Which of the following can be classified
Q35: The most common element by mass percent
Q36: What is the chemical symbol for chromium?
A)C
B)Ca
C)Cl
D)Cr
E)Cu
Q38: Which of the following observations demonstrates that
Q39: What is the chemical symbol for copper?
A)C
B)Ca
C)Cl
D)Cr
E)Cu
Q42: The formula BaSO4 represents a compound composed
Q48: Which chemical symbol represents a non-metal?
A)Al
B)B
C)Ga
D)Si
E)P
Q50: Element Z has the following properties:
A.noncombustible
B.unreactive
C.colorless,odorless gas
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