Pure Substances & Mixtures

Front

What is a pure substance?

Back

A pure substance is a material made up of only one type of atom (element) or compound, having a uniform and definite composition.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances where each retains its own properties. Mixtures can be homogeneous or heterogeneous.

Front

Define homogeneous mixture.

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, meaning the individual components are not distinguishable.

Front

Define heterogeneous mixture.

Back

A heterogeneous mixture is a mixture where the individual components are distinguishable and not uniformly distributed.

Front

What is filtration?

Back

Filtration is a separation method used to separate solids from liquids or gases using a filter that allows only the fluid to pass through.

Front

What is distillation?

Back

Distillation is a separation technique that involves heating a liquid to create vapor and then cooling the vapor to create a liquid, effectively separating components based on boiling points.

Front

What is evaporation?

Back

Evaporation is the process by which liquid turns into vapor, often used to separate a dissolved solid from a liquid.

Front

What is magnetism in separation methods?

Back

Magnetism is a separation technique that uses magnetic properties to separate magnetic materials from non-magnetic ones.

Front

What is a solution?

Back

A solution is a homogeneous mixture formed when one substance (solute) is dissolved in another (solvent).

Front

Give an example of a heterogeneous mixture.

Back

Cereal with milk is an example of a heterogeneous mixture, as the components can be seen and separated.