separation of subtances

What is Winnowing ?

• A method used to separate the components of a mixture which are different sizes.substances.

• The practice of separating undesirable solid substances and impurities from useful solids by hand.

• A method used to separate lighter components of a mixture from the heavier ones by wind or by blowing air.

During _________________ the solid particles that settle down forming a layer are called sediments

• Decantation

• Condensation

• Evaporation

• sieving

• Sedimentation

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

the process of converting a liquid form to its vapour form is

• Decantation

• Condensation

• Sedimentation

• Evaporation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How are grain seeds removed from their stalks?

• Sieving

• Winnowing

• Threshing

• All of the above

What is a mixture?

• A chemical combination of two or more different substances.

• A physical combination of two or more different substances.

• A chemically pure substance.

• A special type of solution

When the solute dissolves into a solvent and disappears it is called a _____________.

• MIxture

• Solution

• Solvent

• None of the above

Tags

NGSS.MS-PS1-2

Pure substances are made up of the same kind of atoms.

• True

• False

Tags

NGSS.MS-PS1-1

Lemonade is a special mixture called a

• substance

• solution

• plasma

• ingredient

A fruit salad is a

• solution

• mixture

Which of the following is essential to perform winnowing activity?

• Wind

• Water

• Magnet

• Filter paper