Solving Dissolving

If something is soluble in water, what does that mean?

• it is not real

• It CAN dissolve in water

• It CANNOT dissolve in water

Answer explanation

It can dissolve in water. Its molecules are attracted to water molecules

What happens when a solid is dissolving?

• The liquid molecules and solid molecules are attracted to each other. They mix together and break into pieces too small to see.

• The solid molecules disappear. The solid molecules are weaker than the liquid molecules, so they lose the battle.

• The liquid covers the solid molecules so we cant see them.

Tags

NGSS.MS-PS1-2

Do all solids dissolve when mixed with a liquid?

• Yes

• No

True or False:

Once a solid has dissolved into a liquid, the solid can’t ever be removed/come out of the liquid again.

• True

• False

How can you tell by looking at the model that cinnamon molecules and water molecules are not attracted to one another?

Answer explanation

They aren’t touching. There are not any arrows sowing attraction. The round shape of the cinnamon molecule doesn’t fit with the flat side of the triangle/water molecule.

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Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5