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?

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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.

Write about something you learned from reading Solving Dissolving.

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Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5