When brown iodine is exposed to starch it turns dark purple. In an experiment, you place a cornstarch solution in a small plastic bag. Next you place the bag in a beaker of water containing 10 drops of iodine. If the solution in the plastic bag turned dark purple ( select all that apply)

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

yes it is weird but true

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave