I believe the correct answer among the choices listed is option C. The four components of a controlled experiment are the independent variable, dependent variable, control, constant. A controlled experiment is a test where a researcher vary one variable at a time.<span>
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The atom must have gained 1 or more electrons or must have lost 1 or more electrons.
Answer: When a material is heated or cooled, two changes may happen to the particles within the material: Chemical bonds between the particles may form, break or stretch. There is a change in the chemical potential store of energy in the material. The material will heat up or cool down as the particles within it gain or lose speed.
Explanation: