Students in a science class are designing an experiment to test how heat affects the kinetic energy of gas molecules. the students will add different amounts of thermal energy to three closed containers of gas.
labels:
amount of thermal energy added
type of gas used
size of container
speed of gas molecules

identify the independent and dependent variable. not all labels will be used.

! : )

Independent variable -  Amount of thermal energy added

dependent variable - speed of gas molecules

Explanation:

The independent variable is the variable that does not change during the experimental. It is that variable that causes  a specific change in the experimental frame work.

   In the setup above, the amount of thermal energy added is the independent variable.

The dependent variable is that variable that results from the action of the independent variable. It is the effect of applying some specific measures in an  experiment.

  In the setup above, we are examining how heat affects the kinetic energy of gas molecules. Kinetic energy has a lot to do with motion of the particles of system. Therefore, the speed of the gas molecules is the dependent variable.

a electronegativity decreases beacuse the size of nucleus is bigger.