The Atomic Number of an Atom Containing 47 Protons,47 Electrons,and

question 10

Multiple Choice

The atomic number of an atom containing 47 protons,47 electrons,and 60 neutrons is

• A)13.
• B)47.
• C)60.
• D)107.
• E)154.

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Definitions:

Experimental Control

The practice of minimizing variables other than the independent variable in an experiment to ensure that the outcome is directly related to the variable being tested.

Independent Variable

In an experimental setting, the variable that is manipulated by the researcher to observe its effect on the dependent variable.

Double-masked Design

A study design in which neither the participants nor the researchers know who belongs to the control group and who belongs to the experimental group, minimizing bias.

Experimenter Expectancies

The potential influence that a researcher's beliefs, hopes, or biases can have on the outcome of an experiment, often impacting the behavior being studied.