G7 Science Unit Quiz Water

Ink can be separated by a method of -----------------------------------------------

• distillation

• filtration

• chromatography

• sedimentation

chromatography separates the mixture of dyes on the basis of their ----------------------------

• density
• solubility
• gravity
• boiling point

Which of the following is correct about chromatography?

• It separates those solutes that dissolve in the same solvent.

• It separates those solutes that dissolve in different solvents.

• It separates a solute that dissolves in a solid solvent.

• It separates gaseous solutes from liquid solvents.

The part where the gas condenses during the distillation process is called

What process is occurring at the point labelled X?

• The process by which the substance changes from liquid to vapor.

• The process by which the substance changes from gas to liquid.

• A process where it separates two soluble liquid with a significant difference in their boiling point.

• The process where solid changes to vapor.

What process is occurring at the point labelled Y?

• Evaporation

• Condensation

• Sublimation

• Crystallization

Which of these is needed for filtration?

• Wire gauze

• Burner

• Funnel

• Round-bottom flask

What is filtration?

• A method used to separate a solid from a liquid that dissolves in the liquid

• A separating technique used to separate a mixture of a solid and liquid where the solid does not dissolve in the liquid

Evaporation occurs when water changes into 

• transpiration
• snow
• solid
• vapor

Sara heats a salt solution. What is the name of the process happening at X?

• boiling

• evaporation

• freezing