Sticky grease on your hand!
You touched the greasy pizza. Now your hand is yucky and slippy. How do we wash it off?
This is grease. It is sticky and gold.
grease
water
soap
Here come the water drops to rinse it…
Tap to pour a water drop on the grease!
Tap the water — see what the drop does.
Can the water wash the grease away all by itself?
Tap your guess!