How does soap get grease off a plate?

What you’ll see

Water alone just slides over grease, because oil and water don't mix. A soap molecule has two ends: a head that loves water and a long tail that loves oil. The tails dig into the grease, the heads face outward, and together they wrap it into tiny balls that the water carries away.

• Warm paper look
• Narrated
• 22 seconds
• Laptop and phone versions