In an experiment, which of the following would not change the chosen variable?
A) experimental group
B) controlled experiment
C) observation
D) control group
E) variables
Correct Answer:
Verified
Q2: The mass number is equal to the
Q3: All of the following are elements except
A)water
B)oxygen
C)nitrogen
D)hydrogen
E)carbon
Q4: Which of the following is not identified
Q4: Protons,neutrons,and electrons are all _.
A) forms of
Q5: When an overwhelming body of observations and
Q5: The atomic number is the number of
A)atoms
Q10: An atom or group of atoms with
Q11: Fundamental types of matter that have unique
Q11: The measurement of the concentration of hydrogen
Q12: In 1963 Bormann and Likens compared the
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