The test tubes in the rack contain different concentrations of sodium chloride solution.
The solutions were 0.1 M, 0.2 M, 0.3 M, 0.4 M and 0.5 M sodium chloride solution.
The test tube in the beaker contains distilled water. There are three potato chips in each of the six test
tubes.
(i) State why the test tube in the beaker only contains distilled water and three potato chips.

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.