Maria collected the gas given off by a glowing piece of charcoal. The gas was then bubbled through a small amount of colorless limewater. Part of Maria's report stated, "After the gas was put into the jar, the limewater gradually changed to a milky white color." This statement is
A B C D E
an observation a conclusion a generalization an assumption of the investigation a hypothesis
Question: Maria collected the gas given off by a glowing piece of charcoal. The gas was then bubbled through a small amount of colorless limewater. Part of Maria's report stated, "After the gas was put into the jar, the limewater gradually changed to a milky white color." This statement is
(A) an observation
(B) a conclusion
(C) a generalization
(D) an assumption of the investigation
(E) a hypothesis

Answer: (A) an observation
Answer: (D) an assumption of the investigation
Question: Maria collected the gas given off by a glowing piece of charcoal. The gas was then bubbled through a small amount of colorless limewater. Part of Maria's report stated, "After the gas was put into the jar, the limewater gradually changed to a milky white color." This statement is
(A) an observation
(B) a conclusion
(C) a generalization
(D) an assumption of the investigation
(E) a hypothesis
Answer: (A) an observation