Question

Which of these is an example of diffusion and why?
1.a helium-filled balloon rising in the air
2.a hydrogen-filled balloon deflating, due to the gas passing through the skin
3.the smell of perfume of a person standing on the other side of the room
4.sucking a drink out of a bottle using a straw
5.an ice cream turning liquid when it's left out of the freezer
6.the tea in the cup changing color when you add milk, without mixing
7.a light, colored gas spreading down the gas jar
8.a blue crystal forming a blue solution when it is left out sitting in a glass of water
9.spraying paint from a spray paint can

Answer 1

Answer:

spraying paint from a spray paint can

Answer 2

Answer:

.a light, colored gas spreading down the gas jar

Explanation:

the gases diffuse from an area of higher concentration to an area of lower concentration