Exploring Mixtures and Separation Techniques

What is formed when different materials are combined?

• A compound

• A mixture

• A solution

• An element

What type of mixture is created when two materials are evenly mixed together?

• A compound

• A solution

• A heterogeneous mixture

• A suspension

What happens to a solid substance when it dissolves in water?

• It evaporates

• It becomes a gas

• It changes its physical state

• It becomes insoluble

Tags

NGSS.MS-PS1-2

Which method is used to separate substances based on their size?

• Magnetism

• Using a wire mesh strainer

• Evaporation

• Dissolving in water

Which method can be used to separate a mixture of gravel and sand?

• Using a wire mesh strainer

• Filtration

• Dissolving in water

• Evaporation

What is the role of paper filters in separating mixtures?

• To dissolve substances

• To trap insoluble solids

• To attract magnetic materials

• To evaporate liquids

How can a salt water solution be separated?

• By density

• By evaporation

• Using a magnet

• Through filtration

Tags

NGSS.MS-PS3-3

How can substances with different densities be separated?

• Through evaporation

• By dissolving in water

• Using a magnet

• Based on their relative density in water

What property allows magnets to separate iron filings from sand?

• Solubility

• Density

• Size

• Magnetism

How can cork and wood be separated?

• By hand

• Through evaporation

• Using a magnet

• By using tweezers