Suppose that a particular chemical substance A is "pure" [contains no "impurities"], and that it can be chemically decomposed into two other pure materials B and C. What conclusion can be draw from this?
A) B and C must be elements.
B) A must be a chemical compound.
C) A must be an element.
D) B and C must be chemical compounds.
E) Nonsense--it is impossible to decompose a pure substance into two other materials.
B
You might also like to view...
Which of the following is comprised of the answers to the who, when, and where questions?
What will be an ideal response?
As an object is lowered into a deep hole in the ground, which of the following assumptions must be made in regard to the object's potential energy?
a. The potential energy increases. b. The potential energy decreases. c. The potential energy remains constant. d. The potential energy increases and then decreases.
Wien's law implies that a blue star is cooler than a red star.
Answer the following statement true (T) or false (F)
In a parallel circuit with three resistors all the same size, the current flow though each leg of the circuit will be equal
a. True b. False Indicate whether the statement is true or false