Separating Mixtures and Solutions

Which of the following is classified as a mixture?

• soil
• salt
• Carbon Dioxide
• Water

When table salt is dissolved in water, the result is a mixture called a .........(you cannot see the different parts.)

• atom
• molecule
• solution
• compound

A student pours a mixture of sand and saltwater through a filter into a beaker. What will the student find in the filter?

• salt and water
• salt
• sand and salt
• sand

Tags

NGSS.MS-PS1-2

Which process can be used to separate sand and water?

• filtration
• condensation
• magnetism
• sublimation

To separate salt and water, we ________________the mixture.

• condense
• filter
• evaporate
• drink

Which process could be used to separate iron filings and sugar?

• boiling
• evaporation
• filtration
• magnetism

A student pours 300 mL of water into a beaker. He adds 15 g of sugar to the water. He wants to dissolve the sugar as quickly as possible. What should he do?

• cool  the water
• stir the water
• remove the water
• take out the sugar

When sand is placed in a glass of warm water it forms

• a solution
• a mixture
• a pure substance
• an element

Filtration using the equipment shown can be used to separate which substances...

• mixture of salt and pepper
• mixture of pepper and water
• mixture of oxygen and water
• a solution of sugar in water

Particles of salt and sand of a similar size are mixed together. What would be the best method to extract the sand from the mixture?

• use tweezers to pick out the grains of sand.
• pour water into the mixture and filter it.
• use a strainer to separate the salt and sand
• There is no way to do this.