Pure substances and mixtures

Air is:

• An element

• A compound

• A mixture

• None of these

sugar is a

• pure substance

• mixture

cake batter (عجينة) is a

• pure substance

• mixture

Miss Hend is thirsty and she prepares a lemonade. Lemonade is an example of a . . . .

• Pure substance

• Mixture

A combination of pure substances, not in fixed amounts, that can be easily separated.is a

• MIXTURE
• COMPOUND
• ATOM
• PARTICLE

Which one of the following techniques would best be used to separate soil and water?

• crystallization

• distillation

• Filtration

• Chromatography

Tags

NGSS.3-5-ETS1-2

Water and oil can be separated by

• separating funnel

• decanting

• filtration

• evaporation

The process of changing a liquid to a gas is called

• evaporation

• filtration

• sieving

• decanting

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What process takes place in obtaining the salt ?

• evaporation

• desalination

• condesntation

• salination

How to separate flour from iron nail?

• Hand-picking method

• Filtration method

• Floatation method

• Magnetic attraction

Tags

NGSS.MS-PS2-3