In a washing machine, how is water on its own different from water that has been mixed with detergent?
Unlike water by itself, water with detergent will eventually drain away.
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Unlike water with detergent, water by itself attaches itself to rinse water.
O Unlike water by itself, water with detergent will be attracted to dirt.
Unlike water with detergent, water by itself breaks up surface tension.
Part B
Click one statement in paragraph 4 below that best supports the answer to Part A.
4
Surfactants also have another key property for cleaning. Each surfactant molecule
has two ends. One end is "water loving" and tends to attach itself to water. The other
end is "water hating." It tends to attach itself to other substances, including dirt and
grease. The water-hating end of the molecule is significant because water is not
naturally attracted to dirt. But water that has been mixed with a surfactant goes to work
on dirt and grease. As the machine turns or circulates the water, the surfactant attaches
to the dirt and grease and pulls it out. Then, when the rinse water pours into the
dishwasher or clothes washer, the other end of the surfactant molecule, the water-loving
part, attaches itself to the rinse water. This pulls the dirt and grease away from the
dishes or clothes and into the rinse water, which eventually drains and leaves behind the
clean items.