What is a key characteristic of solutions compared to mixtures?

• Solutions cannot be separated into their components.

• One or more ingredients in solutions dissolve when mixed.

• Solutions can only be made with liquids.

• Mixtures always involve solid ingredients.

How can a mixture of different sized particles be separated?

• By dissolving in water

• Using a magnet

• Using a sieve or strainer

• By boiling

What property allows iron filings to be separated from sand?

• Color

• Magnetic properties

• Size

• Solubility

Tags

NGSS.MS-PS2-5

How can sand and cork be separated?

• By floating in water

• By boiling

• Using a magnet

• Using a sieve

What method is used to separate sand from water?

• Dissolution

• Magnetic separation

• Evaporation

• Filtration

How can salt be separated from a saltwater solution?

• By freezing

• Using a magnet

• By filtration

• Through evaporation

What two methods are used to separate a mixture of salt and pepper?

• Dissolution and magnetic separation

• Magnetic separation and filtration

• Evaporation and freezing

• Filtration and evaporation

Why can't a strainer be used to separate salt and pepper?

• The strainer holes are too small

• Both dissolve in water

• The strainer holes are too large

• Both are the same size

What is the purpose of boiling in the separation process?

• To dissolve more substances

• To clean the mixture

• To make the mixture magnetic

• To evaporate the solvent

Tags

NGSS.MS-PS1-4

What encourages the dissolving process to happen faster when creating a solution?

• Freezing the mixture

• Applying a magnet

• Stirring and using hot water

• Using cold water

Tags

NGSS.MS-PS3-4