Aaliya knows that sliced apples turn brown when left out in the open air. she also knows that pouring certain liquids on then will keep this from happening. aaliya thinks that water, ginger ale, or lemon juice may do the trick. how could aaliya set up an experiment to find out which one will work. what are the variables? what will she use as a control?

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table?