Natural Sciences

Hand Sorting

Manually separating components of a mixture based on physical properties like size, shape, and color.

Sifting

Using a sieve or mesh to separate particles of different sizes, where smaller particles pass through and larger ones are retained.

Filtration

A process that separates solid particles from a liquid or gas by passing the mixture through a filter medium.

Magnetism

Separating magnetic materials from non-magnetic ones using a magnetic field.

Evaporation

A process that separates a soluble solid from a liquid by heating the solution to evaporate the liquid.

Distillation

A method that separates liquids with different boiling points by heating and collecting the vapor of the liquid with the lower boiling point.

Fractional Distillation

Separates complex mixtures of liquids using a fractionating column to achieve more precise separation of components.

Chromatography

A technique that separates substances based on their different affinities for a stationary phase and a mobile phase.

Plastic

A synthetic material made of large organic particles, primarily composed of carbon and hydrogen.

Biodegradable

Substances that can break down naturally through the action of bacteria or exposure to environmental elements.

Heat Conductivity

The ability of a material to transfer heat energy; high conductivity allows quick heat flow, while low indicates resistance.

Electricity Conductivity

The ability of a material to allow electric current to flow through it, with conductors allowing free charge movement.

Fossil Fuels

Non-renewable energy sources formed from prehistoric organic materials, including coal, natural gas, and crude oil.

Environmental Impact of Plastic

Plastic production causes energy consumption and pollution and contributes to non-biodegradable waste and health risks.

Environmental Impact of Metals

Mining and producing metals lead to pollution and environmental degradation, and they take long to decompose.