She wanted to find out if a fluorescent lightbulb generated less heat in a room than a standard lightbulb. She formed a hypothes
is and planned out an experiment. She selected one standard lightbulb and one fluorescent lightbulb, making sure that both bulbs gave the same amount of light. Next, she put each lightbulb in a cardboard box (used to represent a room), taped the boxes shut, and measured the temperature change in each box after 30 minutes. She also measured the temperature change with no lightbulb. She repeated each step again to make sure her findings were the same the second time and recorded her measurements in the table below. After looking at the results, she was amazed at what a huge difference there was between the types of bulbs. which would be the control group? I know the box with the fluorescent light is the experimental group.
<span>The box with no lightbulb is the control group.
The others are treatments. The purpose of a control group is used to increase the validity of the experiment by testing
the independent variable to check that it
does not influence the results. </span>
One thing that must be kept in mind is that atomic size increases down the group and decreases across the period. The bond lengths of species are influenced by the relative sizes of atoms or ions present in the bond.
The bonds in the answer have been arranged on basis of their decreasing atomic size because the greater the atomic size of the atoms, the greater the bond length and vice versa.
