Mixtures and Solutions Video

What defines a mixture?

• Different materials chemically combined.

• Different materials placed together without chemical combination.

• A single material that has been broken into smaller pieces.

• Two materials that have dissolved completely into each other.

How are solutions formed?

• When two materials are chemically bonded.

• When two materials are unevenly mixed together.

• When two materials are evenly mixed together....something dissolves.

• When a solid substance is filtered from a liquid.

What is the best tool to separate sand and water?

• paper filter

• screen/strainer

• magnet

What is an effective method for separating dissolved substances from a liquid solution?

• Using a wire mesh strainer.

• Using a paper filter.

• Evaporating the liquid.

• Separating by hand.

What property allows magnets to separate materials like iron filings from sand?

• Relative density.

• Solubility.

• Particle size.

• Magnetic properties.

Which substance is soluble in this mixture?

• sand

• salt

• water

What tool would be best to separate glass and wood?

• funnel

• screen

• density

• magnet

What tool would be best to separate gravel and sand?

• filter

• screen

• density

• magnet

What tool would be best to separate iron filings and salt?

• filter

• screen

• density

• magnet