Mixtures & Solutions Review

Why is a salad a mixture?

• because it has different kinds of vegetables in it

• because the ingredients can easily be separated

• because when the parts are combined, it forms a new substance

• because you can eat it with a fork

Which is an example of a solution?

• a bucket of sand and rocks

• a bucket of water and sand

• a bucket of rocks & sand

• none of these are solutions

Why is a container of sand and rocks a mixture?

• because it can separated physically

• because sand and rocks are combined chemically

• because when sand and rocks are mixed, it makes a new substance

• because one dissolves in the other

What will happen when sand is stirred into a glass of water?

• the sand will dissolve and form a mixture

• the sand will settle to the bottom and form a mixture

• the sand will dissolve and form a new compound

• the sand will sink to the bottom and form a solution

Tags

NGSS.MS-PS1-2

Which is an example of a solution?

• salt & water

• sand & water

• sand & rocks

• salt & sand

Terry mixed sugar and koolaid powder into water. What did Terry make?

• a compound

• a solution

• an element

• a solvent

Which is true about the rate of dissolving?

• if you stir the solute in the solvent, it will dissolve faster

• if you use larger particles of solute, it will dissolve faster

• if you use colder solvent, the solute will dissolve faster

• if you allow the solute to sit in the solvent undisturbed, the solute will dissolve faster

Tags

NGSS.MS-PS1-4

In a saltwater solution, what is the solvent?

• water

• salt

• sugar

• milk

In a solution, which is true about the solute and the solvent?

• there is more solute than solvent

• there is more solvent than solute

• there are equal amounts of solute and solvent

• the amount of solute and solvent don't matter

If you wanted to increase the rate of dissolving, what should you do?

• decrease the particle size of the solute

• increase the temperature of the solute

• allow the solute to sit undisturbed in the solvent

• decrease the temperature of the solvent

Tags

NGSS.MS-PS3-4