Separation techniques and Matter

What are separation techniques in science?

Methods used to separate components of a mixture based on their physical or chemical properties.

What is filtration?

A process that separates solids from liquids using a porous material.

What is distillation?

A technique used to separate components of a liquid mixture based on differences in boiling points.

How does evaporation work as a separation technique?

It involves the process of turning a liquid into vapor to separate dissolved solids from a liquid.

What is chromatography?

A method used to separate and analyze components of a mixture based on their movement through a stationary phase.

What is separation by centrifugation?

A technique that uses centrifugal force to separate components based on density.

What is a mixture?

A combination of two or more substances that retain their individual properties.

What are the two main types of mixtures?

Homogeneous mixtures and heterogeneous mixtures.

What is a homogeneous mixture?

A mixture that has a uniform composition throughout, such as salt water.

What is a heterogeneous mixture?

A mixture that has a non-uniform composition, such as salad or sand and gravel.

What is the principle of solubility used in separation?

It refers to the ability of a substance to dissolve in a solvent, which can be exploited for separation.

What is chromatography paper?

A special type of paper used in chromatography to separate different substances.

What is the role of mobile phase in chromatography?

It is the solvent that carries the mixture to be separated through the stationary phase.

What does the term 'residue' mean in filtration?

The solid material that remains on the filter paper after the liquid has passed through.

What is an example of a separation technique?

Mixing sand and salt, then separating the two using water and filtration.

How is density used in separation techniques?

It utilizes the mass per unit volume property of substances to separate them based on their densities.

What is the role of temperature in distillation?

Temperature is controlled to ensure that components boil at their specific boiling points for separation.

What is sublimation?

A process in which a solid turns directly into gas without passing through a liquid phase, used for separation.

What factors affect the efficiency of separation techniques?

Factors include temperature, pressure, and the physical and chemical properties of the components.

What is extraction in separation techniques?

A method that utilizes the solubility of compounds in a solvent to separate them from a mixture.